Home / 3,117.60-4,677.12-1,578.24

Finding the Fourth Proportional to 3,117.60, 4,677.12 and 1,578.24

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Solution

The fourth proportional to 3,117.60, 4,677.12 and 1,578.24 is: 2,367.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.60 : 4,677.12 = 1,578.24 : x
  2. Step 2: Convert to fraction form
    3,117.60/4,677.12 = 1,578.24/x
  3. Step 3: Cross multiply
    3,117.60x = 4,677.12 × 1,578.24
  4. Step 4: Simplify right side
    3,117.60x = 7,381,617.87
  5. Step 5: Solve for x
    x = 7,381,617.87/3,117.60
  6. Step 6: Final answer
    x = 2,367.72

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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.