Home / 2,153.19-3,230.17-766.50

Finding the Fourth Proportional to 2,153.19, 3,230.17 and 766.50

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Solution

The fourth proportional to 2,153.19, 3,230.17 and 766.50 is: 1,149.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.19 : 3,230.17 = 766.50 : x
  2. Step 2: Convert to fraction form
    2,153.19/3,230.17 = 766.50/x
  3. Step 3: Cross multiply
    2,153.19x = 3,230.17 × 766.50
  4. Step 4: Simplify right side
    2,153.19x = 2,475,911.28
  5. Step 5: Solve for x
    x = 2,475,911.28/2,153.19
  6. Step 6: Final answer
    x = 1,149.88

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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.