Home / 2,871.95-4,308.35-1,411.20

Finding the Fourth Proportional to 2,871.95, 4,308.35 and 1,411.20

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Solution

The fourth proportional to 2,871.95, 4,308.35 and 1,411.20 is: 2,117.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.95 : 4,308.35 = 1,411.20 : x
  2. Step 2: Convert to fraction form
    2,871.95/4,308.35 = 1,411.20/x
  3. Step 3: Cross multiply
    2,871.95x = 4,308.35 × 1,411.20
  4. Step 4: Simplify right side
    2,871.95x = 6,079,936.46
  5. Step 5: Solve for x
    x = 6,079,936.46/2,871.95
  6. Step 6: Final answer
    x = 2,117.01

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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.