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Finding the Fourth Proportional to 6,312.16, 8,711.09 and 3,660.40

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Solution

The fourth proportional to 6,312.16, 8,711.09 and 3,660.40 is: 5,051.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,312.16 : 8,711.09 = 3,660.40 : x
  2. Step 2: Convert to fraction form
    6,312.16/8,711.09 = 3,660.40/x
  3. Step 3: Cross multiply
    6,312.16x = 8,711.09 × 3,660.40
  4. Step 4: Simplify right side
    6,312.16x = 31,886,073.84
  5. Step 5: Solve for x
    x = 31,886,073.84/6,312.16
  6. Step 6: Final answer
    x = 5,051.53

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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.