Home / 7,807.89-10,775.53-4,451.76

Finding the Fourth Proportional to 7,807.89, 10,775.53 and 4,451.76

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Solution

The fourth proportional to 7,807.89, 10,775.53 and 4,451.76 is: 6,143.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807.89 : 10,775.53 = 4,451.76 : x
  2. Step 2: Convert to fraction form
    7,807.89/10,775.53 = 4,451.76/x
  3. Step 3: Cross multiply
    7,807.89x = 10,775.53 × 4,451.76
  4. Step 4: Simplify right side
    7,807.89x = 47,970,079.00
  5. Step 5: Solve for x
    x = 47,970,079.00/7,807.89
  6. Step 6: Final answer
    x = 6,143.79

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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.