Home / 9,815.44-13,545.20-5,339.12

Finding the Fourth Proportional to 9,815.44, 13,545.20 and 5,339.12

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Solution

The fourth proportional to 9,815.44, 13,545.20 and 5,339.12 is: 7,367.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,815.44 : 13,545.20 = 5,339.12 : x
  2. Step 2: Convert to fraction form
    9,815.44/13,545.20 = 5,339.12/x
  3. Step 3: Cross multiply
    9,815.44x = 13,545.20 × 5,339.12
  4. Step 4: Simplify right side
    9,815.44x = 72,319,448.22
  5. Step 5: Solve for x
    x = 72,319,448.22/9,815.44
  6. Step 6: Final answer
    x = 7,367.93

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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.