Home / 2,772.41-4,155.13-1,386.13

Finding the Fourth Proportional to 2,772.41, 4,155.13 and 1,386.13

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Solution

The fourth proportional to 2,772.41, 4,155.13 and 1,386.13 is: 2,077.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.41 : 4,155.13 = 1,386.13 : x
  2. Step 2: Convert to fraction form
    2,772.41/4,155.13 = 1,386.13/x
  3. Step 3: Cross multiply
    2,772.41x = 4,155.13 × 1,386.13
  4. Step 4: Simplify right side
    2,772.41x = 5,759,522.64
  5. Step 5: Solve for x
    x = 5,759,522.64/2,772.41
  6. Step 6: Final answer
    x = 2,077.45

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Half scale
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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.