Home / 5,155.45-7,114.13-2,916.81

Finding the Fourth Proportional to 5,155.45, 7,114.13 and 2,916.81

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Solution

The fourth proportional to 5,155.45, 7,114.13 and 2,916.81 is: 4,024.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.45 : 7,114.13 = 2,916.81 : x
  2. Step 2: Convert to fraction form
    5,155.45/7,114.13 = 2,916.81/x
  3. Step 3: Cross multiply
    5,155.45x = 7,114.13 × 2,916.81
  4. Step 4: Simplify right side
    5,155.45x = 20,750,561.88
  5. Step 5: Solve for x
    x = 20,750,561.88/5,155.45
  6. Step 6: Final answer
    x = 4,024.98

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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.