Home / 7,125.48-9,833.38-3,981.80

Finding the Fourth Proportional to 7,125.48, 9,833.38 and 3,981.80

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Solution

The fourth proportional to 7,125.48, 9,833.38 and 3,981.80 is: 5,495.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.48 : 9,833.38 = 3,981.80 : x
  2. Step 2: Convert to fraction form
    7,125.48/9,833.38 = 3,981.80/x
  3. Step 3: Cross multiply
    7,125.48x = 9,833.38 × 3,981.80
  4. Step 4: Simplify right side
    7,125.48x = 39,154,552.48
  5. Step 5: Solve for x
    x = 39,154,552.48/7,125.48
  6. Step 6: Final answer
    x = 5,495.01

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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.