Home / 7,760.79-11,641.77-5,319.81

Finding the Fourth Proportional to 7,760.79, 11,641.77 and 5,319.81

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Solution

The fourth proportional to 7,760.79, 11,641.77 and 5,319.81 is: 7,980.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,760.79 : 11,641.77 = 5,319.81 : x
  2. Step 2: Convert to fraction form
    7,760.79/11,641.77 = 5,319.81/x
  3. Step 3: Cross multiply
    7,760.79x = 11,641.77 × 5,319.81
  4. Step 4: Simplify right side
    7,760.79x = 61,932,004.46
  5. Step 5: Solve for x
    x = 61,932,004.46/7,760.79
  6. Step 6: Final answer
    x = 7,980.12

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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.