Home / 1,427.04-2,151.08-1,308.57

Finding the Fourth Proportional to 1,427.04, 2,151.08 and 1,308.57

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Solution

The fourth proportional to 1,427.04, 2,151.08 and 1,308.57 is: 1,972.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.04 : 2,151.08 = 1,308.57 : x
  2. Step 2: Convert to fraction form
    1,427.04/2,151.08 = 1,308.57/x
  3. Step 3: Cross multiply
    1,427.04x = 2,151.08 × 1,308.57
  4. Step 4: Simplify right side
    1,427.04x = 2,814,836.41
  5. Step 5: Solve for x
    x = 2,814,836.41/1,427.04
  6. Step 6: Final answer
    x = 1,972.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.