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Finding the Fourth Proportional to 1,875.25, 2,587.85 and 1,047.25

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Solution

The fourth proportional to 1,875.25, 2,587.85 and 1,047.25 is: 1,445.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.25 : 2,587.85 = 1,047.25 : x
  2. Step 2: Convert to fraction form
    1,875.25/2,587.85 = 1,047.25/x
  3. Step 3: Cross multiply
    1,875.25x = 2,587.85 × 1,047.25
  4. Step 4: Simplify right side
    1,875.25x = 2,710,125.91
  5. Step 5: Solve for x
    x = 2,710,125.91/1,875.25
  6. Step 6: Final answer
    x = 1,445.21

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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.