Home / 8,959.20-12,363.84-4,980.36

Finding the Fourth Proportional to 8,959.20, 12,363.84 and 4,980.36

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Solution

The fourth proportional to 8,959.20, 12,363.84 and 4,980.36 is: 6,872.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.20 : 12,363.84 = 4,980.36 : x
  2. Step 2: Convert to fraction form
    8,959.20/12,363.84 = 4,980.36/x
  3. Step 3: Cross multiply
    8,959.20x = 12,363.84 × 4,980.36
  4. Step 4: Simplify right side
    8,959.20x = 61,576,374.18
  5. Step 5: Solve for x
    x = 61,576,374.18/8,959.20
  6. Step 6: Final answer
    x = 6,872.98

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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.