Home / 2,870.85-4,308.97-1,411.05

Finding the Fourth Proportional to 2,870.85, 4,308.97 and 1,411.05

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Solution

The fourth proportional to 2,870.85, 4,308.97 and 1,411.05 is: 2,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.85 : 4,308.97 = 1,411.05 : x
  2. Step 2: Convert to fraction form
    2,870.85/4,308.97 = 1,411.05/x
  3. Step 3: Cross multiply
    2,870.85x = 4,308.97 × 1,411.05
  4. Step 4: Simplify right side
    2,870.85x = 6,080,172.12
  5. Step 5: Solve for x
    x = 6,080,172.12/2,870.85
  6. Step 6: Final answer
    x = 2,117.90

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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.