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Finding the Fourth Proportional to 4,810.70, 6,639.18 and 2,686.70

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Solution

The fourth proportional to 4,810.70, 6,639.18 and 2,686.70 is: 3,707.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,810.70 : 6,639.18 = 2,686.70 : x
  2. Step 2: Convert to fraction form
    4,810.70/6,639.18 = 2,686.70/x
  3. Step 3: Cross multiply
    4,810.70x = 6,639.18 × 2,686.70
  4. Step 4: Simplify right side
    4,810.70x = 17,837,484.91
  5. Step 5: Solve for x
    x = 17,837,484.91/4,810.70
  6. Step 6: Final answer
    x = 3,707.88

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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.