Home / 7,890.48-11,839.68-5,259.76

Finding the Fourth Proportional to 7,890.48, 11,839.68 and 5,259.76

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Solution

The fourth proportional to 7,890.48, 11,839.68 and 5,259.76 is: 7,892.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.48 : 11,839.68 = 5,259.76 : x
  2. Step 2: Convert to fraction form
    7,890.48/11,839.68 = 5,259.76/x
  3. Step 3: Cross multiply
    7,890.48x = 11,839.68 × 5,259.76
  4. Step 4: Simplify right side
    7,890.48x = 62,273,875.28
  5. Step 5: Solve for x
    x = 62,273,875.28/7,890.48
  6. Step 6: Final answer
    x = 7,892.28

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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.