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Finding the Fourth Proportional to 7,900.92, 10,918.89 and 6,482.34

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Solution

The fourth proportional to 7,900.92, 10,918.89 and 6,482.34 is: 8,958.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.92 : 10,918.89 = 6,482.34 : x
  2. Step 2: Convert to fraction form
    7,900.92/10,918.89 = 6,482.34/x
  3. Step 3: Cross multiply
    7,900.92x = 10,918.89 × 6,482.34
  4. Step 4: Simplify right side
    7,900.92x = 70,779,957.40
  5. Step 5: Solve for x
    x = 70,779,957.40/7,900.92
  6. Step 6: Final answer
    x = 8,958.45

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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.