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Finding the Fourth Proportional to 7,807.19, 10,775.12 and 4,975.79

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Solution

The fourth proportional to 7,807.19, 10,775.12 and 4,975.79 is: 6,867.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807.19 : 10,775.12 = 4,975.79 : x
  2. Step 2: Convert to fraction form
    7,807.19/10,775.12 = 4,975.79/x
  3. Step 3: Cross multiply
    7,807.19x = 10,775.12 × 4,975.79
  4. Step 4: Simplify right side
    7,807.19x = 53,614,655.59
  5. Step 5: Solve for x
    x = 53,614,655.59/7,807.19
  6. Step 6: Final answer
    x = 6,867.35

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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.