Home / 1,245.31-1,718.61-824.93

Finding the Fourth Proportional to 1,245.31, 1,718.61 and 824.93

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Solution

The fourth proportional to 1,245.31, 1,718.61 and 824.93 is: 1,138.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.31 : 1,718.61 = 824.93 : x
  2. Step 2: Convert to fraction form
    1,245.31/1,718.61 = 824.93/x
  3. Step 3: Cross multiply
    1,245.31x = 1,718.61 × 824.93
  4. Step 4: Simplify right side
    1,245.31x = 1,417,737.24
  5. Step 5: Solve for x
    x = 1,417,737.24/1,245.31
  6. Step 6: Final answer
    x = 1,138.46

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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.