Home / 10,428.38-15,642.62-2,637.20

Finding the Fourth Proportional to 10,428.38, 15,642.62 and 2,637.20

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Solution

The fourth proportional to 10,428.38, 15,642.62 and 2,637.20 is: 3,955.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.38 : 15,642.62 = 2,637.20 : x
  2. Step 2: Convert to fraction form
    10,428.38/15,642.62 = 2,637.20/x
  3. Step 3: Cross multiply
    10,428.38x = 15,642.62 × 2,637.20
  4. Step 4: Simplify right side
    10,428.38x = 41,252,717.46
  5. Step 5: Solve for x
    x = 41,252,717.46/10,428.38
  6. Step 6: Final answer
    x = 3,955.81

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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.