Home / 1,555.40-2,334.62-1,212.47

Finding the Fourth Proportional to 1,555.40, 2,334.62 and 1,212.47

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Solution

The fourth proportional to 1,555.40, 2,334.62 and 1,212.47 is: 1,819.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.40 : 2,334.62 = 1,212.47 : x
  2. Step 2: Convert to fraction form
    1,555.40/2,334.62 = 1,212.47/x
  3. Step 3: Cross multiply
    1,555.40x = 2,334.62 × 1,212.47
  4. Step 4: Simplify right side
    1,555.40x = 2,830,638.98
  5. Step 5: Solve for x
    x = 2,830,638.98/1,555.40
  6. Step 6: Final answer
    x = 1,819.88

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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.