Home / 8,756.40-12,083.36-4,979.06

Finding the Fourth Proportional to 8,756.40, 12,083.36 and 4,979.06

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Solution

The fourth proportional to 8,756.40, 12,083.36 and 4,979.06 is: 6,870.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.40 : 12,083.36 = 4,979.06 : x
  2. Step 2: Convert to fraction form
    8,756.40/12,083.36 = 4,979.06/x
  3. Step 3: Cross multiply
    8,756.40x = 12,083.36 × 4,979.06
  4. Step 4: Simplify right side
    8,756.40x = 60,163,689.13
  5. Step 5: Solve for x
    x = 60,163,689.13/8,756.40
  6. Step 6: Final answer
    x = 6,870.82

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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.