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Finding the Fourth Proportional to 5,319.04, 7,978.55 and 1,423.34

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Solution

The fourth proportional to 5,319.04, 7,978.55 and 1,423.34 is: 2,135.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.04 : 7,978.55 = 1,423.34 : x
  2. Step 2: Convert to fraction form
    5,319.04/7,978.55 = 1,423.34/x
  3. Step 3: Cross multiply
    5,319.04x = 7,978.55 × 1,423.34
  4. Step 4: Simplify right side
    5,319.04x = 11,356,189.36
  5. Step 5: Solve for x
    x = 11,356,189.36/5,319.04
  6. Step 6: Final answer
    x = 2,135.01

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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.