Home / 8,728.60-12,043.37-5,143.70

Finding the Fourth Proportional to 8,728.60, 12,043.37 and 5,143.70

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Solution

The fourth proportional to 8,728.60, 12,043.37 and 5,143.70 is: 7,097.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.60 : 12,043.37 = 5,143.70 : x
  2. Step 2: Convert to fraction form
    8,728.60/12,043.37 = 5,143.70/x
  3. Step 3: Cross multiply
    8,728.60x = 12,043.37 × 5,143.70
  4. Step 4: Simplify right side
    8,728.60x = 61,947,486.66
  5. Step 5: Solve for x
    x = 61,947,486.66/8,728.60
  6. Step 6: Final answer
    x = 7,097.07

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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.