Home / 5,155.87-7,114.56-3,166.51

Finding the Fourth Proportional to 5,155.87, 7,114.56 and 3,166.51

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Solution

The fourth proportional to 5,155.87, 7,114.56 and 3,166.51 is: 4,369.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.87 : 7,114.56 = 3,166.51 : x
  2. Step 2: Convert to fraction form
    5,155.87/7,114.56 = 3,166.51/x
  3. Step 3: Cross multiply
    5,155.87x = 7,114.56 × 3,166.51
  4. Step 4: Simplify right side
    5,155.87x = 22,528,325.39
  5. Step 5: Solve for x
    x = 22,528,325.39/5,155.87
  6. Step 6: Final answer
    x = 4,369.45

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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.