Home / 8,918.42-12,307.39-5,141.57

Finding the Fourth Proportional to 8,918.42, 12,307.39 and 5,141.57

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Solution

The fourth proportional to 8,918.42, 12,307.39 and 5,141.57 is: 7,095.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.42 : 12,307.39 = 5,141.57 : x
  2. Step 2: Convert to fraction form
    8,918.42/12,307.39 = 5,141.57/x
  3. Step 3: Cross multiply
    8,918.42x = 12,307.39 × 5,141.57
  4. Step 4: Simplify right side
    8,918.42x = 63,279,232.81
  5. Step 5: Solve for x
    x = 63,279,232.81/8,918.42
  6. Step 6: Final answer
    x = 7,095.35

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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.