Home / 8,721.86-13,081.88-4,560.19

Finding the Fourth Proportional to 8,721.86, 13,081.88 and 4,560.19

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Solution

The fourth proportional to 8,721.86, 13,081.88 and 4,560.19 is: 6,839.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.86 : 13,081.88 = 4,560.19 : x
  2. Step 2: Convert to fraction form
    8,721.86/13,081.88 = 4,560.19/x
  3. Step 3: Cross multiply
    8,721.86x = 13,081.88 × 4,560.19
  4. Step 4: Simplify right side
    8,721.86x = 59,655,837.05
  5. Step 5: Solve for x
    x = 59,655,837.05/8,721.86
  6. Step 6: Final answer
    x = 6,839.80

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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.