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Finding the Fourth Proportional to 7,155.17, 9,868.72 and 6,269.44

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Solution

The fourth proportional to 7,155.17, 9,868.72 and 6,269.44 is: 8,647.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.17 : 9,868.72 = 6,269.44 : x
  2. Step 2: Convert to fraction form
    7,155.17/9,868.72 = 6,269.44/x
  3. Step 3: Cross multiply
    7,155.17x = 9,868.72 × 6,269.44
  4. Step 4: Simplify right side
    7,155.17x = 61,871,347.92
  5. Step 5: Solve for x
    x = 61,871,347.92/7,155.17
  6. Step 6: Final answer
    x = 8,647.08

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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.