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Finding the Fourth Proportional to 1,659.86, 2,488.94 and 929.24

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Solution

The fourth proportional to 1,659.86, 2,488.94 and 929.24 is: 1,393.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.86 : 2,488.94 = 929.24 : x
  2. Step 2: Convert to fraction form
    1,659.86/2,488.94 = 929.24/x
  3. Step 3: Cross multiply
    1,659.86x = 2,488.94 × 929.24
  4. Step 4: Simplify right side
    1,659.86x = 2,312,822.61
  5. Step 5: Solve for x
    x = 2,312,822.61/1,659.86
  6. Step 6: Final answer
    x = 1,393.38

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1.5x scale

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.