Home / 7,158.28-9,878.40-4,014.48

Finding the Fourth Proportional to 7,158.28, 9,878.40 and 4,014.48

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Solution

The fourth proportional to 7,158.28, 9,878.40 and 4,014.48 is: 5,539.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158.28 : 9,878.40 = 4,014.48 : x
  2. Step 2: Convert to fraction form
    7,158.28/9,878.40 = 4,014.48/x
  3. Step 3: Cross multiply
    7,158.28x = 9,878.40 × 4,014.48
  4. Step 4: Simplify right side
    7,158.28x = 39,656,639.23
  5. Step 5: Solve for x
    x = 39,656,639.23/7,158.28
  6. Step 6: Final answer
    x = 5,539.97

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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.