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Finding the Fourth Proportional to 7,955.76, 10,979.19 and 4,810.14

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Solution

The fourth proportional to 7,955.76, 10,979.19 and 4,810.14 is: 6,638.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.76 : 10,979.19 = 4,810.14 : x
  2. Step 2: Convert to fraction form
    7,955.76/10,979.19 = 4,810.14/x
  3. Step 3: Cross multiply
    7,955.76x = 10,979.19 × 4,810.14
  4. Step 4: Simplify right side
    7,955.76x = 52,811,440.99
  5. Step 5: Solve for x
    x = 52,811,440.99/7,955.76
  6. Step 6: Final answer
    x = 6,638.14

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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.