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Finding the Fourth Proportional to 1,587.77, 2,190.95 and 924.65

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Solution

The fourth proportional to 1,587.77, 2,190.95 and 924.65 is: 1,275.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.77 : 2,190.95 = 924.65 : x
  2. Step 2: Convert to fraction form
    1,587.77/2,190.95 = 924.65/x
  3. Step 3: Cross multiply
    1,587.77x = 2,190.95 × 924.65
  4. Step 4: Simplify right side
    1,587.77x = 2,025,861.92
  5. Step 5: Solve for x
    x = 2,025,861.92/1,587.77
  6. Step 6: Final answer
    x = 1,275.92

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1.5x scale

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.