Home / 7,420.04-11,115.48-5,680.16

Finding the Fourth Proportional to 7,420.04, 11,115.48 and 5,680.16

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Solution

The fourth proportional to 7,420.04, 11,115.48 and 5,680.16 is: 8,509.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.04 : 11,115.48 = 5,680.16 : x
  2. Step 2: Convert to fraction form
    7,420.04/11,115.48 = 5,680.16/x
  3. Step 3: Cross multiply
    7,420.04x = 11,115.48 × 5,680.16
  4. Step 4: Simplify right side
    7,420.04x = 63,137,704.88
  5. Step 5: Solve for x
    x = 63,137,704.88/7,420.04
  6. Step 6: Final answer
    x = 8,509.08

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.