Home / 7,148.23-9,864.56-3,918.03

Finding the Fourth Proportional to 7,148.23, 9,864.56 and 3,918.03

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Solution

The fourth proportional to 7,148.23, 9,864.56 and 3,918.03 is: 5,406.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,148.23 : 9,864.56 = 3,918.03 : x
  2. Step 2: Convert to fraction form
    7,148.23/9,864.56 = 3,918.03/x
  3. Step 3: Cross multiply
    7,148.23x = 9,864.56 × 3,918.03
  4. Step 4: Simplify right side
    7,148.23x = 38,649,642.02
  5. Step 5: Solve for x
    x = 38,649,642.02/7,148.23
  6. Step 6: Final answer
    x = 5,406.88

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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.