Home / 1,686.64-2,532.40-1,074.24

Finding the Fourth Proportional to 1,686.64, 2,532.40 and 1,074.24

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Solution

The fourth proportional to 1,686.64, 2,532.40 and 1,074.24 is: 1,612.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.64 : 2,532.40 = 1,074.24 : x
  2. Step 2: Convert to fraction form
    1,686.64/2,532.40 = 1,074.24/x
  3. Step 3: Cross multiply
    1,686.64x = 2,532.40 × 1,074.24
  4. Step 4: Simplify right side
    1,686.64x = 2,720,405.38
  5. Step 5: Solve for x
    x = 2,720,405.38/1,686.64
  6. Step 6: Final answer
    x = 1,612.91

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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.