Home / 1,217.55-1,826.16-340.12

Finding the Fourth Proportional to 1,217.55, 1,826.16 and 340.12

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Solution

The fourth proportional to 1,217.55, 1,826.16 and 340.12 is: 510.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.55 : 1,826.16 = 340.12 : x
  2. Step 2: Convert to fraction form
    1,217.55/1,826.16 = 340.12/x
  3. Step 3: Cross multiply
    1,217.55x = 1,826.16 × 340.12
  4. Step 4: Simplify right side
    1,217.55x = 621,113.54
  5. Step 5: Solve for x
    x = 621,113.54/1,217.55
  6. Step 6: Final answer
    x = 510.13

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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.