Home / 1,689.32-2,531.08-1,518.13

Finding the Fourth Proportional to 1,689.32, 2,531.08 and 1,518.13

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Solution

The fourth proportional to 1,689.32, 2,531.08 and 1,518.13 is: 2,274.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.32 : 2,531.08 = 1,518.13 : x
  2. Step 2: Convert to fraction form
    1,689.32/2,531.08 = 1,518.13/x
  3. Step 3: Cross multiply
    1,689.32x = 2,531.08 × 1,518.13
  4. Step 4: Simplify right side
    1,689.32x = 3,842,499.30
  5. Step 5: Solve for x
    x = 3,842,499.30/1,689.32
  6. Step 6: Final answer
    x = 2,274.58

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1.5x scale

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.