Home / 2,011.40-2,775.55-1,225.29

Finding the Fourth Proportional to 2,011.40, 2,775.55 and 1,225.29

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Solution

The fourth proportional to 2,011.40, 2,775.55 and 1,225.29 is: 1,690.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.40 : 2,775.55 = 1,225.29 : x
  2. Step 2: Convert to fraction form
    2,011.40/2,775.55 = 1,225.29/x
  3. Step 3: Cross multiply
    2,011.40x = 2,775.55 × 1,225.29
  4. Step 4: Simplify right side
    2,011.40x = 3,400,853.66
  5. Step 5: Solve for x
    x = 3,400,853.66/2,011.40
  6. Step 6: Final answer
    x = 1,690.79

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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.