Home / 8,437.48-11,642.28-5,415.28

Finding the Fourth Proportional to 8,437.48, 11,642.28 and 5,415.28

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Solution

The fourth proportional to 8,437.48, 11,642.28 and 5,415.28 is: 7,472.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,437.48 : 11,642.28 = 5,415.28 : x
  2. Step 2: Convert to fraction form
    8,437.48/11,642.28 = 5,415.28/x
  3. Step 3: Cross multiply
    8,437.48x = 11,642.28 × 5,415.28
  4. Step 4: Simplify right side
    8,437.48x = 63,046,206.04
  5. Step 5: Solve for x
    x = 63,046,206.04/8,437.48
  6. Step 6: Final answer
    x = 7,472.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.