Home / 9,013.81-12,439.31-4,980.90

Finding the Fourth Proportional to 9,013.81, 12,439.31 and 4,980.90

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Solution

The fourth proportional to 9,013.81, 12,439.31 and 4,980.90 is: 6,873.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,013.81 : 12,439.31 = 4,980.90 : x
  2. Step 2: Convert to fraction form
    9,013.81/12,439.31 = 4,980.90/x
  3. Step 3: Cross multiply
    9,013.81x = 12,439.31 × 4,980.90
  4. Step 4: Simplify right side
    9,013.81x = 61,958,959.18
  5. Step 5: Solve for x
    x = 61,958,959.18/9,013.81
  6. Step 6: Final answer
    x = 6,873.78

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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.