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Finding the Fourth Proportional to 7,807.19, 10,770.90 and 4,974.06

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Solution

The fourth proportional to 7,807.19, 10,770.90 and 4,974.06 is: 6,862.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807.19 : 10,770.90 = 4,974.06 : x
  2. Step 2: Convert to fraction form
    7,807.19/10,770.90 = 4,974.06/x
  3. Step 3: Cross multiply
    7,807.19x = 10,770.90 × 4,974.06
  4. Step 4: Simplify right side
    7,807.19x = 53,575,073.33
  5. Step 5: Solve for x
    x = 53,575,073.33/7,807.19
  6. Step 6: Final answer
    x = 6,862.27

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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.