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Finding the Fourth Proportional to 6,897.32, 10,345.90 and 1,966.28

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Solution

The fourth proportional to 6,897.32, 10,345.90 and 1,966.28 is: 2,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,897.32 : 10,345.90 = 1,966.28 : x
  2. Step 2: Convert to fraction form
    6,897.32/10,345.90 = 1,966.28/x
  3. Step 3: Cross multiply
    6,897.32x = 10,345.90 × 1,966.28
  4. Step 4: Simplify right side
    6,897.32x = 20,342,936.25
  5. Step 5: Solve for x
    x = 20,342,936.25/6,897.32
  6. Step 6: Final answer
    x = 2,949.40

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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.