Home / 6,987.98-10,482.71-3,478.86

Finding the Fourth Proportional to 6,987.98, 10,482.71 and 3,478.86

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Solution

The fourth proportional to 6,987.98, 10,482.71 and 3,478.86 is: 5,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.98 : 10,482.71 = 3,478.86 : x
  2. Step 2: Convert to fraction form
    6,987.98/10,482.71 = 3,478.86/x
  3. Step 3: Cross multiply
    6,987.98x = 10,482.71 × 3,478.86
  4. Step 4: Simplify right side
    6,987.98x = 36,467,876.16
  5. Step 5: Solve for x
    x = 36,467,876.16/6,987.98
  6. Step 6: Final answer
    x = 5,218.66

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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.