Home / 2,122.08-2,927.95-1,225.81

Finding the Fourth Proportional to 2,122.08, 2,927.95 and 1,225.81

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Solution

The fourth proportional to 2,122.08, 2,927.95 and 1,225.81 is: 1,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.08 : 2,927.95 = 1,225.81 : x
  2. Step 2: Convert to fraction form
    2,122.08/2,927.95 = 1,225.81/x
  3. Step 3: Cross multiply
    2,122.08x = 2,927.95 × 1,225.81
  4. Step 4: Simplify right side
    2,122.08x = 3,589,110.39
  5. Step 5: Solve for x
    x = 3,589,110.39/2,122.08
  6. Step 6: Final answer
    x = 1,691.32

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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.