Home / 3,320.50-4,980.54-1,129.18

Finding the Fourth Proportional to 3,320.50, 4,980.54 and 1,129.18

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Solution

The fourth proportional to 3,320.50, 4,980.54 and 1,129.18 is: 1,693.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.50 : 4,980.54 = 1,129.18 : x
  2. Step 2: Convert to fraction form
    3,320.50/4,980.54 = 1,129.18/x
  3. Step 3: Cross multiply
    3,320.50x = 4,980.54 × 1,129.18
  4. Step 4: Simplify right side
    3,320.50x = 5,623,926.16
  5. Step 5: Solve for x
    x = 5,623,926.16/3,320.50
  6. Step 6: Final answer
    x = 1,693.70

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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.