Home / 5,156.85-7,116.45-2,798.99

Finding the Fourth Proportional to 5,156.85, 7,116.45 and 2,798.99

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Solution

The fourth proportional to 5,156.85, 7,116.45 and 2,798.99 is: 3,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.85 : 7,116.45 = 2,798.99 : x
  2. Step 2: Convert to fraction form
    5,156.85/7,116.45 = 2,798.99/x
  3. Step 3: Cross multiply
    5,156.85x = 7,116.45 × 2,798.99
  4. Step 4: Simplify right side
    5,156.85x = 19,918,872.39
  5. Step 5: Solve for x
    x = 19,918,872.39/5,156.85
  6. Step 6: Final answer
    x = 3,862.60

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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.