Home / 2,587.48-3,877.98-1,289.32

Finding the Fourth Proportional to 2,587.48, 3,877.98 and 1,289.32

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Solution

The fourth proportional to 2,587.48, 3,877.98 and 1,289.32 is: 1,932.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.48 : 3,877.98 = 1,289.32 : x
  2. Step 2: Convert to fraction form
    2,587.48/3,877.98 = 1,289.32/x
  3. Step 3: Cross multiply
    2,587.48x = 3,877.98 × 1,289.32
  4. Step 4: Simplify right side
    2,587.48x = 4,999,957.17
  5. Step 5: Solve for x
    x = 4,999,957.17/2,587.48
  6. Step 6: Final answer
    x = 1,932.37

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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.