Home / 2,153.68-3,231.16-1,000.40

Finding the Fourth Proportional to 2,153.68, 3,231.16 and 1,000.40

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Solution

The fourth proportional to 2,153.68, 3,231.16 and 1,000.40 is: 1,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.68 : 3,231.16 = 1,000.40 : x
  2. Step 2: Convert to fraction form
    2,153.68/3,231.16 = 1,000.40/x
  3. Step 3: Cross multiply
    2,153.68x = 3,231.16 × 1,000.40
  4. Step 4: Simplify right side
    2,153.68x = 3,232,452.46
  5. Step 5: Solve for x
    x = 3,232,452.46/2,153.68
  6. Step 6: Final answer
    x = 1,500.90

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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.