Home / 2,291.40-3,162.08-1,283.05

Finding the Fourth Proportional to 2,291.40, 3,162.08 and 1,283.05

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Solution

The fourth proportional to 2,291.40, 3,162.08 and 1,283.05 is: 1,770.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.40 : 3,162.08 = 1,283.05 : x
  2. Step 2: Convert to fraction form
    2,291.40/3,162.08 = 1,283.05/x
  3. Step 3: Cross multiply
    2,291.40x = 3,162.08 × 1,283.05
  4. Step 4: Simplify right side
    2,291.40x = 4,057,113.90
  5. Step 5: Solve for x
    x = 4,057,113.90/2,291.40
  6. Step 6: Final answer
    x = 1,770.58

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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.