Home / 7,412.20-11,116.38-6,429.16

Finding the Fourth Proportional to 7,412.20, 11,116.38 and 6,429.16

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Solution

The fourth proportional to 7,412.20, 11,116.38 and 6,429.16 is: 9,642.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412.20 : 11,116.38 = 6,429.16 : x
  2. Step 2: Convert to fraction form
    7,412.20/11,116.38 = 6,429.16/x
  3. Step 3: Cross multiply
    7,412.20x = 11,116.38 × 6,429.16
  4. Step 4: Simplify right side
    7,412.20x = 71,468,985.64
  5. Step 5: Solve for x
    x = 71,468,985.64/7,412.20
  6. Step 6: Final answer
    x = 9,642.07

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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.