Home / 7,325.18-10,990.12-2,645.16

Finding the Fourth Proportional to 7,325.18, 10,990.12 and 2,645.16

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Solution

The fourth proportional to 7,325.18, 10,990.12 and 2,645.16 is: 3,968.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,325.18 : 10,990.12 = 2,645.16 : x
  2. Step 2: Convert to fraction form
    7,325.18/10,990.12 = 2,645.16/x
  3. Step 3: Cross multiply
    7,325.18x = 10,990.12 × 2,645.16
  4. Step 4: Simplify right side
    7,325.18x = 29,070,625.82
  5. Step 5: Solve for x
    x = 29,070,625.82/7,325.18
  6. Step 6: Final answer
    x = 3,968.59

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Half scale
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Double scale
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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.