Home / 7,158.38-9,878.56-4,015.58

Finding the Fourth Proportional to 7,158.38, 9,878.56 and 4,015.58

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Solution

The fourth proportional to 7,158.38, 9,878.56 and 4,015.58 is: 5,541.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158.38 : 9,878.56 = 4,015.58 : x
  2. Step 2: Convert to fraction form
    7,158.38/9,878.56 = 4,015.58/x
  3. Step 3: Cross multiply
    7,158.38x = 9,878.56 × 4,015.58
  4. Step 4: Simplify right side
    7,158.38x = 39,668,088.53
  5. Step 5: Solve for x
    x = 39,668,088.53/7,158.38
  6. Step 6: Final answer
    x = 5,541.49

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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.