Home / 1,213.40-1,820.10-482.97

Finding the Fourth Proportional to 1,213.40, 1,820.10 and 482.97

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Solution

The fourth proportional to 1,213.40, 1,820.10 and 482.97 is: 724.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.40 : 1,820.10 = 482.97 : x
  2. Step 2: Convert to fraction form
    1,213.40/1,820.10 = 482.97/x
  3. Step 3: Cross multiply
    1,213.40x = 1,820.10 × 482.97
  4. Step 4: Simplify right side
    1,213.40x = 879,053.70
  5. Step 5: Solve for x
    x = 879,053.70/1,213.40
  6. Step 6: Final answer
    x = 724.46

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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.