Home / 3,545.77-4,891.74-2,129.54

Finding the Fourth Proportional to 3,545.77, 4,891.74 and 2,129.54

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Solution

The fourth proportional to 3,545.77, 4,891.74 and 2,129.54 is: 2,937.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,545.77 : 4,891.74 = 2,129.54 : x
  2. Step 2: Convert to fraction form
    3,545.77/4,891.74 = 2,129.54/x
  3. Step 3: Cross multiply
    3,545.77x = 4,891.74 × 2,129.54
  4. Step 4: Simplify right side
    3,545.77x = 10,417,135.53
  5. Step 5: Solve for x
    x = 10,417,135.53/3,545.77
  6. Step 6: Final answer
    x = 2,937.91

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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.