Home / 2,010.40-2,774.84-1,225.11

Finding the Fourth Proportional to 2,010.40, 2,774.84 and 1,225.11

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Solution

The fourth proportional to 2,010.40, 2,774.84 and 1,225.11 is: 1,690.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,010.40 : 2,774.84 = 1,225.11 : x
  2. Step 2: Convert to fraction form
    2,010.40/2,774.84 = 1,225.11/x
  3. Step 3: Cross multiply
    2,010.40x = 2,774.84 × 1,225.11
  4. Step 4: Simplify right side
    2,010.40x = 3,399,484.23
  5. Step 5: Solve for x
    x = 3,399,484.23/2,010.40
  6. Step 6: Final answer
    x = 1,690.95

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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.