Home / 7,230.40-10,851.75-5,155.49

Finding the Fourth Proportional to 7,230.40, 10,851.75 and 5,155.49

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Solution

The fourth proportional to 7,230.40, 10,851.75 and 5,155.49 is: 7,737.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,230.40 : 10,851.75 = 5,155.49 : x
  2. Step 2: Convert to fraction form
    7,230.40/10,851.75 = 5,155.49/x
  3. Step 3: Cross multiply
    7,230.40x = 10,851.75 × 5,155.49
  4. Step 4: Simplify right side
    7,230.40x = 55,946,088.61
  5. Step 5: Solve for x
    x = 55,946,088.61/7,230.40
  6. Step 6: Final answer
    x = 7,737.62

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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.