Home / 5,155.10-7,112.36-2,916.76

Finding the Fourth Proportional to 5,155.10, 7,112.36 and 2,916.76

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Solution

The fourth proportional to 5,155.10, 7,112.36 and 2,916.76 is: 4,024.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.10 : 7,112.36 = 2,916.76 : x
  2. Step 2: Convert to fraction form
    5,155.10/7,112.36 = 2,916.76/x
  3. Step 3: Cross multiply
    5,155.10x = 7,112.36 × 2,916.76
  4. Step 4: Simplify right side
    5,155.10x = 20,745,047.15
  5. Step 5: Solve for x
    x = 20,745,047.15/5,155.10
  6. Step 6: Final answer
    x = 4,024.18

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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.