Home / 2,778.04-4,167.28-929.17

Finding the Fourth Proportional to 2,778.04, 4,167.28 and 929.17

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Solution

The fourth proportional to 2,778.04, 4,167.28 and 929.17 is: 1,393.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.04 : 4,167.28 = 929.17 : x
  2. Step 2: Convert to fraction form
    2,778.04/4,167.28 = 929.17/x
  3. Step 3: Cross multiply
    2,778.04x = 4,167.28 × 929.17
  4. Step 4: Simplify right side
    2,778.04x = 3,872,093.04
  5. Step 5: Solve for x
    x = 3,872,093.04/2,778.04
  6. Step 6: Final answer
    x = 1,393.82

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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.