Home / 4,969.17-6,857.28-2,978.55

Finding the Fourth Proportional to 4,969.17, 6,857.28 and 2,978.55

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Solution

The fourth proportional to 4,969.17, 6,857.28 and 2,978.55 is: 4,110.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,969.17 : 6,857.28 = 2,978.55 : x
  2. Step 2: Convert to fraction form
    4,969.17/6,857.28 = 2,978.55/x
  3. Step 3: Cross multiply
    4,969.17x = 6,857.28 × 2,978.55
  4. Step 4: Simplify right side
    4,969.17x = 20,424,751.34
  5. Step 5: Solve for x
    x = 20,424,751.34/4,969.17
  6. Step 6: Final answer
    x = 4,110.29

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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.