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Finding the Fourth Proportional to 4,393.68, 6,591.60 and 1,315.68

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Solution

The fourth proportional to 4,393.68, 6,591.60 and 1,315.68 is: 1,973.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,393.68 : 6,591.60 = 1,315.68 : x
  2. Step 2: Convert to fraction form
    4,393.68/6,591.60 = 1,315.68/x
  3. Step 3: Cross multiply
    4,393.68x = 6,591.60 × 1,315.68
  4. Step 4: Simplify right side
    4,393.68x = 8,672,436.29
  5. Step 5: Solve for x
    x = 8,672,436.29/4,393.68
  6. Step 6: Final answer
    x = 1,973.84

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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.