Home / 2,153.20-3,229.80-1,332.40

Finding the Fourth Proportional to 2,153.20, 3,229.80 and 1,332.40

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Solution

The fourth proportional to 2,153.20, 3,229.80 and 1,332.40 is: 1,998.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.20 : 3,229.80 = 1,332.40 : x
  2. Step 2: Convert to fraction form
    2,153.20/3,229.80 = 1,332.40/x
  3. Step 3: Cross multiply
    2,153.20x = 3,229.80 × 1,332.40
  4. Step 4: Simplify right side
    2,153.20x = 4,303,385.52
  5. Step 5: Solve for x
    x = 4,303,385.52/2,153.20
  6. Step 6: Final answer
    x = 1,998.60

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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.