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Finding the Fourth Proportional to 5,878.55, 8,814.81 and 1,980.11

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Solution

The fourth proportional to 5,878.55, 8,814.81 and 1,980.11 is: 2,969.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,878.55 : 8,814.81 = 1,980.11 : x
  2. Step 2: Convert to fraction form
    5,878.55/8,814.81 = 1,980.11/x
  3. Step 3: Cross multiply
    5,878.55x = 8,814.81 × 1,980.11
  4. Step 4: Simplify right side
    5,878.55x = 17,454,293.43
  5. Step 5: Solve for x
    x = 17,454,293.43/5,878.55
  6. Step 6: Final answer
    x = 2,969.15

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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.