Home / 3,113.91-4,669.65-1,139.13

Finding the Fourth Proportional to 3,113.91, 4,669.65 and 1,139.13

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Solution

The fourth proportional to 3,113.91, 4,669.65 and 1,139.13 is: 1,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.91 : 4,669.65 = 1,139.13 : x
  2. Step 2: Convert to fraction form
    3,113.91/4,669.65 = 1,139.13/x
  3. Step 3: Cross multiply
    3,113.91x = 4,669.65 × 1,139.13
  4. Step 4: Simplify right side
    3,113.91x = 5,319,338.40
  5. Step 5: Solve for x
    x = 5,319,338.40/3,113.91
  6. Step 6: Final answer
    x = 1,708.25

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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.