Home / 5,412.32-8,118.47-4,428.17

Finding the Fourth Proportional to 5,412.32, 8,118.47 and 4,428.17

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Solution

The fourth proportional to 5,412.32, 8,118.47 and 4,428.17 is: 6,642.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.32 : 8,118.47 = 4,428.17 : x
  2. Step 2: Convert to fraction form
    5,412.32/8,118.47 = 4,428.17/x
  3. Step 3: Cross multiply
    5,412.32x = 8,118.47 × 4,428.17
  4. Step 4: Simplify right side
    5,412.32x = 35,949,935.78
  5. Step 5: Solve for x
    x = 35,949,935.78/5,412.32
  6. Step 6: Final answer
    x = 6,642.25

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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.