Home / 8,918.47-12,307.44-5,141.71

Finding the Fourth Proportional to 8,918.47, 12,307.44 and 5,141.71

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Solution

The fourth proportional to 8,918.47, 12,307.44 and 5,141.71 is: 7,095.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.47 : 12,307.44 = 5,141.71 : x
  2. Step 2: Convert to fraction form
    8,918.47/12,307.44 = 5,141.71/x
  3. Step 3: Cross multiply
    8,918.47x = 12,307.44 × 5,141.71
  4. Step 4: Simplify right side
    8,918.47x = 63,281,287.32
  5. Step 5: Solve for x
    x = 63,281,287.32/8,918.47
  6. Step 6: Final answer
    x = 7,095.53

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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.