Home / 5,248.14-7,242.39-2,890.20

Finding the Fourth Proportional to 5,248.14, 7,242.39 and 2,890.20

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Solution

The fourth proportional to 5,248.14, 7,242.39 and 2,890.20 is: 3,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.14 : 7,242.39 = 2,890.20 : x
  2. Step 2: Convert to fraction form
    5,248.14/7,242.39 = 2,890.20/x
  3. Step 3: Cross multiply
    5,248.14x = 7,242.39 × 2,890.20
  4. Step 4: Simplify right side
    5,248.14x = 20,931,955.58
  5. Step 5: Solve for x
    x = 20,931,955.58/5,248.14
  6. Step 6: Final answer
    x = 3,988.45

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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.