Home / 7,610.90-10,480.08-6,121.28

Finding the Fourth Proportional to 7,610.90, 10,480.08 and 6,121.28

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Solution

The fourth proportional to 7,610.90, 10,480.08 and 6,121.28 is: 8,428.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,610.90 : 10,480.08 = 6,121.28 : x
  2. Step 2: Convert to fraction form
    7,610.90/10,480.08 = 6,121.28/x
  3. Step 3: Cross multiply
    7,610.90x = 10,480.08 × 6,121.28
  4. Step 4: Simplify right side
    7,610.90x = 64,151,504.10
  5. Step 5: Solve for x
    x = 64,151,504.10/7,610.90
  6. Step 6: Final answer
    x = 8,428.90

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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.