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Finding the Fourth Proportional to 8,955.95, 12,359.18 and 4,977.05

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Solution

The fourth proportional to 8,955.95, 12,359.18 and 4,977.05 is: 6,868.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.95 : 12,359.18 = 4,977.05 : x
  2. Step 2: Convert to fraction form
    8,955.95/12,359.18 = 4,977.05/x
  3. Step 3: Cross multiply
    8,955.95x = 12,359.18 × 4,977.05
  4. Step 4: Simplify right side
    8,955.95x = 61,512,170.14
  5. Step 5: Solve for x
    x = 61,512,170.14/8,955.95
  6. Step 6: Final answer
    x = 6,868.31

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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.