Home / 5,678.51-8,471.18-5,280.80

Finding the Fourth Proportional to 5,678.51, 8,471.18 and 5,280.80

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Solution

The fourth proportional to 5,678.51, 8,471.18 and 5,280.80 is: 7,877.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.51 : 8,471.18 = 5,280.80 : x
  2. Step 2: Convert to fraction form
    5,678.51/8,471.18 = 5,280.80/x
  3. Step 3: Cross multiply
    5,678.51x = 8,471.18 × 5,280.80
  4. Step 4: Simplify right side
    5,678.51x = 44,734,578.19
  5. Step 5: Solve for x
    x = 44,734,578.19/5,678.51
  6. Step 6: Final answer
    x = 7,877.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.