Home / 3,117.56-4,677.28-926.36

Finding the Fourth Proportional to 3,117.56, 4,677.28 and 926.36

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Solution

The fourth proportional to 3,117.56, 4,677.28 and 926.36 is: 1,389.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.56 : 4,677.28 = 926.36 : x
  2. Step 2: Convert to fraction form
    3,117.56/4,677.28 = 926.36/x
  3. Step 3: Cross multiply
    3,117.56x = 4,677.28 × 926.36
  4. Step 4: Simplify right side
    3,117.56x = 4,332,845.10
  5. Step 5: Solve for x
    x = 4,332,845.10/3,117.56
  6. Step 6: Final answer
    x = 1,389.82

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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.