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Finding the Fourth Proportional to 1,587.71, 2,191.18 and 924.63

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Solution

The fourth proportional to 1,587.71, 2,191.18 and 924.63 is: 1,276.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.71 : 2,191.18 = 924.63 : x
  2. Step 2: Convert to fraction form
    1,587.71/2,191.18 = 924.63/x
  3. Step 3: Cross multiply
    1,587.71x = 2,191.18 × 924.63
  4. Step 4: Simplify right side
    1,587.71x = 2,026,030.76
  5. Step 5: Solve for x
    x = 2,026,030.76/1,587.71
  6. Step 6: Final answer
    x = 1,276.07

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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.