Home / 7,807.61-10,775.48-5,121.08

Finding the Fourth Proportional to 7,807.61, 10,775.48 and 5,121.08

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Solution

The fourth proportional to 7,807.61, 10,775.48 and 5,121.08 is: 7,067.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807.61 : 10,775.48 = 5,121.08 : x
  2. Step 2: Convert to fraction form
    7,807.61/10,775.48 = 5,121.08/x
  3. Step 3: Cross multiply
    7,807.61x = 10,775.48 × 5,121.08
  4. Step 4: Simplify right side
    7,807.61x = 55,182,096.45
  5. Step 5: Solve for x
    x = 55,182,096.45/7,807.61
  6. Step 6: Final answer
    x = 7,067.74

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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.