Home / 7,148.25-9,864.99-4,005.45

Finding the Fourth Proportional to 7,148.25, 9,864.99 and 4,005.45

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Solution

The fourth proportional to 7,148.25, 9,864.99 and 4,005.45 is: 5,527.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,148.25 : 9,864.99 = 4,005.45 : x
  2. Step 2: Convert to fraction form
    7,148.25/9,864.99 = 4,005.45/x
  3. Step 3: Cross multiply
    7,148.25x = 9,864.99 × 4,005.45
  4. Step 4: Simplify right side
    7,148.25x = 39,513,724.20
  5. Step 5: Solve for x
    x = 39,513,724.20/7,148.25
  6. Step 6: Final answer
    x = 5,527.75

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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.