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Finding the Fourth Proportional to 5,918.76, 8,870.58 and 3,146.76

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Solution

The fourth proportional to 5,918.76, 8,870.58 and 3,146.76 is: 4,716.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918.76 : 8,870.58 = 3,146.76 : x
  2. Step 2: Convert to fraction form
    5,918.76/8,870.58 = 3,146.76/x
  3. Step 3: Cross multiply
    5,918.76x = 8,870.58 × 3,146.76
  4. Step 4: Simplify right side
    5,918.76x = 27,913,586.32
  5. Step 5: Solve for x
    x = 27,913,586.32/5,918.76
  6. Step 6: Final answer
    x = 4,716.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.