Home / 2,191.52-3,024.64-1,406.40

Finding the Fourth Proportional to 2,191.52, 3,024.64 and 1,406.40

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Solution

The fourth proportional to 2,191.52, 3,024.64 and 1,406.40 is: 1,941.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.52 : 3,024.64 = 1,406.40 : x
  2. Step 2: Convert to fraction form
    2,191.52/3,024.64 = 1,406.40/x
  3. Step 3: Cross multiply
    2,191.52x = 3,024.64 × 1,406.40
  4. Step 4: Simplify right side
    2,191.52x = 4,253,853.70
  5. Step 5: Solve for x
    x = 4,253,853.70/2,191.52
  6. Step 6: Final answer
    x = 1,941.05

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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.