Home / 5,248.40-7,242.89-2,890.53

Finding the Fourth Proportional to 5,248.40, 7,242.89 and 2,890.53

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Solution

The fourth proportional to 5,248.40, 7,242.89 and 2,890.53 is: 3,988.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.40 : 7,242.89 = 2,890.53 : x
  2. Step 2: Convert to fraction form
    5,248.40/7,242.89 = 2,890.53/x
  3. Step 3: Cross multiply
    5,248.40x = 7,242.89 × 2,890.53
  4. Step 4: Simplify right side
    5,248.40x = 20,935,776.38
  5. Step 5: Solve for x
    x = 20,935,776.38/5,248.40
  6. Step 6: Final answer
    x = 3,988.99

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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.