Home / 6,515.34-8,990.85-4,127.86

Finding the Fourth Proportional to 6,515.34, 8,990.85 and 4,127.86

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Solution

The fourth proportional to 6,515.34, 8,990.85 and 4,127.86 is: 5,696.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.34 : 8,990.85 = 4,127.86 : x
  2. Step 2: Convert to fraction form
    6,515.34/8,990.85 = 4,127.86/x
  3. Step 3: Cross multiply
    6,515.34x = 8,990.85 × 4,127.86
  4. Step 4: Simplify right side
    6,515.34x = 37,112,973.58
  5. Step 5: Solve for x
    x = 37,112,973.58/6,515.34
  6. Step 6: Final answer
    x = 5,696.25

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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.