Home / 2,145.59-3,217.58-913.58

Finding the Fourth Proportional to 2,145.59, 3,217.58 and 913.58

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Solution

The fourth proportional to 2,145.59, 3,217.58 and 913.58 is: 1,370.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.59 : 3,217.58 = 913.58 : x
  2. Step 2: Convert to fraction form
    2,145.59/3,217.58 = 913.58/x
  3. Step 3: Cross multiply
    2,145.59x = 3,217.58 × 913.58
  4. Step 4: Simplify right side
    2,145.59x = 2,939,512.17
  5. Step 5: Solve for x
    x = 2,939,512.17/2,145.59
  6. Step 6: Final answer
    x = 1,370.03

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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.