Home / 1,293.15-1,929.79-1,154.75

Finding the Fourth Proportional to 1,293.15, 1,929.79 and 1,154.75

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Solution

The fourth proportional to 1,293.15, 1,929.79 and 1,154.75 is: 1,723.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.15 : 1,929.79 = 1,154.75 : x
  2. Step 2: Convert to fraction form
    1,293.15/1,929.79 = 1,154.75/x
  3. Step 3: Cross multiply
    1,293.15x = 1,929.79 × 1,154.75
  4. Step 4: Simplify right side
    1,293.15x = 2,228,410.30
  5. Step 5: Solve for x
    x = 2,228,410.30/1,293.15
  6. Step 6: Final answer
    x = 1,723.24

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.