Home / 9,681.12-13,358.16-5,488.56

Finding the Fourth Proportional to 9,681.12, 13,358.16 and 5,488.56

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Solution

The fourth proportional to 9,681.12, 13,358.16 and 5,488.56 is: 7,573.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,681.12 : 13,358.16 = 5,488.56 : x
  2. Step 2: Convert to fraction form
    9,681.12/13,358.16 = 5,488.56/x
  3. Step 3: Cross multiply
    9,681.12x = 13,358.16 × 5,488.56
  4. Step 4: Simplify right side
    9,681.12x = 73,317,062.65
  5. Step 5: Solve for x
    x = 73,317,062.65/9,681.12
  6. Step 6: Final answer
    x = 7,573.20

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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.