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Finding the Fourth Proportional to 7,751.75, 10,699.11 and 5,099.40

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Solution

The fourth proportional to 7,751.75, 10,699.11 and 5,099.40 is: 7,038.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.75 : 10,699.11 = 5,099.40 : x
  2. Step 2: Convert to fraction form
    7,751.75/10,699.11 = 5,099.40/x
  3. Step 3: Cross multiply
    7,751.75x = 10,699.11 × 5,099.40
  4. Step 4: Simplify right side
    7,751.75x = 54,559,041.53
  5. Step 5: Solve for x
    x = 54,559,041.53/7,751.75
  6. Step 6: Final answer
    x = 7,038.29

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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.