Home / 5,156.60-7,116.05-2,798.75

Finding the Fourth Proportional to 5,156.60, 7,116.05 and 2,798.75

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Solution

The fourth proportional to 5,156.60, 7,116.05 and 2,798.75 is: 3,862.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.60 : 7,116.05 = 2,798.75 : x
  2. Step 2: Convert to fraction form
    5,156.60/7,116.05 = 2,798.75/x
  3. Step 3: Cross multiply
    5,156.60x = 7,116.05 × 2,798.75
  4. Step 4: Simplify right side
    5,156.60x = 19,916,069.72
  5. Step 5: Solve for x
    x = 19,916,069.72/5,156.60
  6. Step 6: Final answer
    x = 3,862.25

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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.