Home / 5,485.38-7,569.89-3,127.74

Finding the Fourth Proportional to 5,485.38, 7,569.89 and 3,127.74

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Solution

The fourth proportional to 5,485.38, 7,569.89 and 3,127.74 is: 4,316.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.38 : 7,569.89 = 3,127.74 : x
  2. Step 2: Convert to fraction form
    5,485.38/7,569.89 = 3,127.74/x
  3. Step 3: Cross multiply
    5,485.38x = 7,569.89 × 3,127.74
  4. Step 4: Simplify right side
    5,485.38x = 23,676,647.75
  5. Step 5: Solve for x
    x = 23,676,647.75/5,485.38
  6. Step 6: Final answer
    x = 4,316.32

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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.