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Finding the Fourth Proportional to 5,248.56, 7,873.65 and 1,785

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Solution

The fourth proportional to 5,248.56, 7,873.65 and 1,785 is: 2,677.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.56 : 7,873.65 = 1,785 : x
  2. Step 2: Convert to fraction form
    5,248.56/7,873.65 = 1,785/x
  3. Step 3: Cross multiply
    5,248.56x = 7,873.65 × 1,785
  4. Step 4: Simplify right side
    5,248.56x = 14,054,465.25
  5. Step 5: Solve for x
    x = 14,054,465.25/5,248.56
  6. Step 6: Final answer
    x = 2,677.78

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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.