Home / 5,116.76-7,061.08-2,878.64

Finding the Fourth Proportional to 5,116.76, 7,061.08 and 2,878.64

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Solution

The fourth proportional to 5,116.76, 7,061.08 and 2,878.64 is: 3,972.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,116.76 : 7,061.08 = 2,878.64 : x
  2. Step 2: Convert to fraction form
    5,116.76/7,061.08 = 2,878.64/x
  3. Step 3: Cross multiply
    5,116.76x = 7,061.08 × 2,878.64
  4. Step 4: Simplify right side
    5,116.76x = 20,326,307.33
  5. Step 5: Solve for x
    x = 20,326,307.33/5,116.76
  6. Step 6: Final answer
    x = 3,972.50

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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.