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Finding the Fourth Proportional to 8,970.94, 13,456.41 and 3,127.40

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Solution

The fourth proportional to 8,970.94, 13,456.41 and 3,127.40 is: 4,691.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,970.94 : 13,456.41 = 3,127.40 : x
  2. Step 2: Convert to fraction form
    8,970.94/13,456.41 = 3,127.40/x
  3. Step 3: Cross multiply
    8,970.94x = 13,456.41 × 3,127.40
  4. Step 4: Simplify right side
    8,970.94x = 42,083,576.63
  5. Step 5: Solve for x
    x = 42,083,576.63/8,970.94
  6. Step 6: Final answer
    x = 4,691.10

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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.