Home / 2,220.53-3,064.37-1,225.89

Finding the Fourth Proportional to 2,220.53, 3,064.37 and 1,225.89

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Solution

The fourth proportional to 2,220.53, 3,064.37 and 1,225.89 is: 1,691.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.53 : 3,064.37 = 1,225.89 : x
  2. Step 2: Convert to fraction form
    2,220.53/3,064.37 = 1,225.89/x
  3. Step 3: Cross multiply
    2,220.53x = 3,064.37 × 1,225.89
  4. Step 4: Simplify right side
    2,220.53x = 3,756,574.41
  5. Step 5: Solve for x
    x = 3,756,574.41/2,220.53
  6. Step 6: Final answer
    x = 1,691.75

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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.