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Finding the Fourth Proportional to 7,875.59, 10,868.56 and 4,338.92

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Solution

The fourth proportional to 7,875.59, 10,868.56 and 4,338.92 is: 5,987.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.59 : 10,868.56 = 4,338.92 : x
  2. Step 2: Convert to fraction form
    7,875.59/10,868.56 = 4,338.92/x
  3. Step 3: Cross multiply
    7,875.59x = 10,868.56 × 4,338.92
  4. Step 4: Simplify right side
    7,875.59x = 47,157,828.68
  5. Step 5: Solve for x
    x = 47,157,828.68/7,875.59
  6. Step 6: Final answer
    x = 5,987.85

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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.