Home / 1,557.87-2,148.80-1,060.31

Finding the Fourth Proportional to 1,557.87, 2,148.80 and 1,060.31

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Solution

The fourth proportional to 1,557.87, 2,148.80 and 1,060.31 is: 1,462.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.87 : 2,148.80 = 1,060.31 : x
  2. Step 2: Convert to fraction form
    1,557.87/2,148.80 = 1,060.31/x
  3. Step 3: Cross multiply
    1,557.87x = 2,148.80 × 1,060.31
  4. Step 4: Simplify right side
    1,557.87x = 2,278,378.08
  5. Step 5: Solve for x
    x = 2,278,378.08/1,557.87
  6. Step 6: Final answer
    x = 1,462.50

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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.