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Finding the Fourth Proportional to 6,156.88, 8,486.40 and 4,478.56

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Solution

The fourth proportional to 6,156.88, 8,486.40 and 4,478.56 is: 6,173.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,156.88 : 8,486.40 = 4,478.56 : x
  2. Step 2: Convert to fraction form
    6,156.88/8,486.40 = 4,478.56/x
  3. Step 3: Cross multiply
    6,156.88x = 8,486.40 × 4,478.56
  4. Step 4: Simplify right side
    6,156.88x = 38,006,851.58
  5. Step 5: Solve for x
    x = 38,006,851.58/6,156.88
  6. Step 6: Final answer
    x = 6,173.07

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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.