Home / 8,705.24-12,013.02-4,979

Finding the Fourth Proportional to 8,705.24, 12,013.02 and 4,979

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Solution

The fourth proportional to 8,705.24, 12,013.02 and 4,979 is: 6,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.24 : 12,013.02 = 4,979 : x
  2. Step 2: Convert to fraction form
    8,705.24/12,013.02 = 4,979/x
  3. Step 3: Cross multiply
    8,705.24x = 12,013.02 × 4,979
  4. Step 4: Simplify right side
    8,705.24x = 59,812,826.58
  5. Step 5: Solve for x
    x = 59,812,826.58/8,705.24
  6. Step 6: Final answer
    x = 6,870.90

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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.