Home / 7,620.48-11,417.12-6,513.60

Finding the Fourth Proportional to 7,620.48, 11,417.12 and 6,513.60

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Solution

The fourth proportional to 7,620.48, 11,417.12 and 6,513.60 is: 9,758.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.48 : 11,417.12 = 6,513.60 : x
  2. Step 2: Convert to fraction form
    7,620.48/11,417.12 = 6,513.60/x
  3. Step 3: Cross multiply
    7,620.48x = 11,417.12 × 6,513.60
  4. Step 4: Simplify right side
    7,620.48x = 74,366,552.83
  5. Step 5: Solve for x
    x = 74,366,552.83/7,620.48
  6. Step 6: Final answer
    x = 9,758.78

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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.