Home / 1,818.07-2,507.10-1,220.74

Finding the Fourth Proportional to 1,818.07, 2,507.10 and 1,220.74

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Solution

The fourth proportional to 1,818.07, 2,507.10 and 1,220.74 is: 1,683.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.07 : 2,507.10 = 1,220.74 : x
  2. Step 2: Convert to fraction form
    1,818.07/2,507.10 = 1,220.74/x
  3. Step 3: Cross multiply
    1,818.07x = 2,507.10 × 1,220.74
  4. Step 4: Simplify right side
    1,818.07x = 3,060,517.25
  5. Step 5: Solve for x
    x = 3,060,517.25/1,818.07
  6. Step 6: Final answer
    x = 1,683.39

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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.