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Finding the Fourth Proportional to 7,991.98, 11,030.37 and 5,010.40

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Solution

The fourth proportional to 7,991.98, 11,030.37 and 5,010.40 is: 6,915.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.98 : 11,030.37 = 5,010.40 : x
  2. Step 2: Convert to fraction form
    7,991.98/11,030.37 = 5,010.40/x
  3. Step 3: Cross multiply
    7,991.98x = 11,030.37 × 5,010.40
  4. Step 4: Simplify right side
    7,991.98x = 55,266,565.85
  5. Step 5: Solve for x
    x = 55,266,565.85/7,991.98
  6. Step 6: Final answer
    x = 6,915.25

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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.