Home / 2,612.81-3,918.05-1,225.02

Finding the Fourth Proportional to 2,612.81, 3,918.05 and 1,225.02

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Solution

The fourth proportional to 2,612.81, 3,918.05 and 1,225.02 is: 1,836.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.81 : 3,918.05 = 1,225.02 : x
  2. Step 2: Convert to fraction form
    2,612.81/3,918.05 = 1,225.02/x
  3. Step 3: Cross multiply
    2,612.81x = 3,918.05 × 1,225.02
  4. Step 4: Simplify right side
    2,612.81x = 4,799,683.49
  5. Step 5: Solve for x
    x = 4,799,683.49/2,612.81
  6. Step 6: Final answer
    x = 1,836.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.