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Finding the Fourth Proportional to 7,903.92, 10,897.28 and 6,482.40

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Solution

The fourth proportional to 7,903.92, 10,897.28 and 6,482.40 is: 8,937.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903.92 : 10,897.28 = 6,482.40 : x
  2. Step 2: Convert to fraction form
    7,903.92/10,897.28 = 6,482.40/x
  3. Step 3: Cross multiply
    7,903.92x = 10,897.28 × 6,482.40
  4. Step 4: Simplify right side
    7,903.92x = 70,640,527.87
  5. Step 5: Solve for x
    x = 70,640,527.87/7,903.92
  6. Step 6: Final answer
    x = 8,937.40

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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.