Home / 2,687.12-4,030.20-1,710.32

Finding the Fourth Proportional to 2,687.12, 4,030.20 and 1,710.32

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Solution

The fourth proportional to 2,687.12, 4,030.20 and 1,710.32 is: 2,565.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.12 : 4,030.20 = 1,710.32 : x
  2. Step 2: Convert to fraction form
    2,687.12/4,030.20 = 1,710.32/x
  3. Step 3: Cross multiply
    2,687.12x = 4,030.20 × 1,710.32
  4. Step 4: Simplify right side
    2,687.12x = 6,892,931.66
  5. Step 5: Solve for x
    x = 6,892,931.66/2,687.12
  6. Step 6: Final answer
    x = 2,565.17

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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.