Home / 1,332.40-1,835.94-1,240.12

Finding the Fourth Proportional to 1,332.40, 1,835.94 and 1,240.12

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Solution

The fourth proportional to 1,332.40, 1,835.94 and 1,240.12 is: 1,708.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.40 : 1,835.94 = 1,240.12 : x
  2. Step 2: Convert to fraction form
    1,332.40/1,835.94 = 1,240.12/x
  3. Step 3: Cross multiply
    1,332.40x = 1,835.94 × 1,240.12
  4. Step 4: Simplify right side
    1,332.40x = 2,276,785.91
  5. Step 5: Solve for x
    x = 2,276,785.91/1,332.40
  6. Step 6: Final answer
    x = 1,708.79

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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.