Home / 1,247.12-1,869.40-598.32

Finding the Fourth Proportional to 1,247.12, 1,869.40 and 598.32

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Solution

The fourth proportional to 1,247.12, 1,869.40 and 598.32 is: 896.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.12 : 1,869.40 = 598.32 : x
  2. Step 2: Convert to fraction form
    1,247.12/1,869.40 = 598.32/x
  3. Step 3: Cross multiply
    1,247.12x = 1,869.40 × 598.32
  4. Step 4: Simplify right side
    1,247.12x = 1,118,499.41
  5. Step 5: Solve for x
    x = 1,118,499.41/1,247.12
  6. Step 6: Final answer
    x = 896.87

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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.