Home / 3,138.08-4,329.18-1,957.10

Finding the Fourth Proportional to 3,138.08, 4,329.18 and 1,957.10

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Solution

The fourth proportional to 3,138.08, 4,329.18 and 1,957.10 is: 2,699.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.08 : 4,329.18 = 1,957.10 : x
  2. Step 2: Convert to fraction form
    3,138.08/4,329.18 = 1,957.10/x
  3. Step 3: Cross multiply
    3,138.08x = 4,329.18 × 1,957.10
  4. Step 4: Simplify right side
    3,138.08x = 8,472,616.53
  5. Step 5: Solve for x
    x = 8,472,616.53/3,138.08
  6. Step 6: Final answer
    x = 2,699.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.