Home / 5,315.80-8,013.52-4,959.00

Finding the Fourth Proportional to 5,315.80, 8,013.52 and 4,959.00

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Solution

The fourth proportional to 5,315.80, 8,013.52 and 4,959.00 is: 7,475.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.80 : 8,013.52 = 4,959.00 : x
  2. Step 2: Convert to fraction form
    5,315.80/8,013.52 = 4,959.00/x
  3. Step 3: Cross multiply
    5,315.80x = 8,013.52 × 4,959.00
  4. Step 4: Simplify right side
    5,315.80x = 39,739,005.61
  5. Step 5: Solve for x
    x = 39,739,005.61/5,315.80
  6. Step 6: Final answer
    x = 7,475.64

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.