Home / 2,611.40-3,603.57-1,432.40

Finding the Fourth Proportional to 2,611.40, 3,603.57 and 1,432.40

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Solution

The fourth proportional to 2,611.40, 3,603.57 and 1,432.40 is: 1,976.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.40 : 3,603.57 = 1,432.40 : x
  2. Step 2: Convert to fraction form
    2,611.40/3,603.57 = 1,432.40/x
  3. Step 3: Cross multiply
    2,611.40x = 3,603.57 × 1,432.40
  4. Step 4: Simplify right side
    2,611.40x = 5,161,753.67
  5. Step 5: Solve for x
    x = 5,161,753.67/2,611.40
  6. Step 6: Final answer
    x = 1,976.62

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1.5x scale

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.