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Finding the Fourth Proportional to 4,266.76, 6,400.15 and 1,188.76

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Solution

The fourth proportional to 4,266.76, 6,400.15 and 1,188.76 is: 1,783.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,266.76 : 6,400.15 = 1,188.76 : x
  2. Step 2: Convert to fraction form
    4,266.76/6,400.15 = 1,188.76/x
  3. Step 3: Cross multiply
    4,266.76x = 6,400.15 × 1,188.76
  4. Step 4: Simplify right side
    4,266.76x = 7,608,242.31
  5. Step 5: Solve for x
    x = 7,608,242.31/4,266.76
  6. Step 6: Final answer
    x = 1,783.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.