Home / 1,360.17-2,037.30-840.31

Finding the Fourth Proportional to 1,360.17, 2,037.30 and 840.31

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Solution

The fourth proportional to 1,360.17, 2,037.30 and 840.31 is: 1,258.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.17 : 2,037.30 = 840.31 : x
  2. Step 2: Convert to fraction form
    1,360.17/2,037.30 = 840.31/x
  3. Step 3: Cross multiply
    1,360.17x = 2,037.30 × 840.31
  4. Step 4: Simplify right side
    1,360.17x = 1,711,949.17
  5. Step 5: Solve for x
    x = 1,711,949.17/1,360.17
  6. Step 6: Final answer
    x = 1,258.63

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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.