Home / 1,312.40-1,965.47-1,037.61

Finding the Fourth Proportional to 1,312.40, 1,965.47 and 1,037.61

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Solution

The fourth proportional to 1,312.40, 1,965.47 and 1,037.61 is: 1,553.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.40 : 1,965.47 = 1,037.61 : x
  2. Step 2: Convert to fraction form
    1,312.40/1,965.47 = 1,037.61/x
  3. Step 3: Cross multiply
    1,312.40x = 1,965.47 × 1,037.61
  4. Step 4: Simplify right side
    1,312.40x = 2,039,386.14
  5. Step 5: Solve for x
    x = 2,039,386.14/1,312.40
  6. Step 6: Final answer
    x = 1,553.93

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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.