Home / 8,756.40-12,083.52-4,979.52

Finding the Fourth Proportional to 8,756.40, 12,083.52 and 4,979.52

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Solution

The fourth proportional to 8,756.40, 12,083.52 and 4,979.52 is: 6,871.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.40 : 12,083.52 = 4,979.52 : x
  2. Step 2: Convert to fraction form
    8,756.40/12,083.52 = 4,979.52/x
  3. Step 3: Cross multiply
    8,756.40x = 12,083.52 × 4,979.52
  4. Step 4: Simplify right side
    8,756.40x = 60,170,129.51
  5. Step 5: Solve for x
    x = 60,170,129.51/8,756.40
  6. Step 6: Final answer
    x = 6,871.56

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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.