Home / 5,115.54-7,055.67-3,124.46

Finding the Fourth Proportional to 5,115.54, 7,055.67 and 3,124.46

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Solution

The fourth proportional to 5,115.54, 7,055.67 and 3,124.46 is: 4,309.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.54 : 7,055.67 = 3,124.46 : x
  2. Step 2: Convert to fraction form
    5,115.54/7,055.67 = 3,124.46/x
  3. Step 3: Cross multiply
    5,115.54x = 7,055.67 × 3,124.46
  4. Step 4: Simplify right side
    5,115.54x = 22,045,158.69
  5. Step 5: Solve for x
    x = 22,045,158.69/5,115.54
  6. Step 6: Final answer
    x = 4,309.45

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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.