Home / 7,760.12-10,721.50-5,412.74

Finding the Fourth Proportional to 7,760.12, 10,721.50 and 5,412.74

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Solution

The fourth proportional to 7,760.12, 10,721.50 and 5,412.74 is: 7,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,760.12 : 10,721.50 = 5,412.74 : x
  2. Step 2: Convert to fraction form
    7,760.12/10,721.50 = 5,412.74/x
  3. Step 3: Cross multiply
    7,760.12x = 10,721.50 × 5,412.74
  4. Step 4: Simplify right side
    7,760.12x = 58,032,624.77
  5. Step 5: Solve for x
    x = 58,032,624.77/7,760.12
  6. Step 6: Final answer
    x = 7,478.32

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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.