Home / 2,331.49-3,216.40-1,386.75

Finding the Fourth Proportional to 2,331.49, 3,216.40 and 1,386.75

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Solution

The fourth proportional to 2,331.49, 3,216.40 and 1,386.75 is: 1,913.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.49 : 3,216.40 = 1,386.75 : x
  2. Step 2: Convert to fraction form
    2,331.49/3,216.40 = 1,386.75/x
  3. Step 3: Cross multiply
    2,331.49x = 3,216.40 × 1,386.75
  4. Step 4: Simplify right side
    2,331.49x = 4,460,342.70
  5. Step 5: Solve for x
    x = 4,460,342.70/2,331.49
  6. Step 6: Final answer
    x = 1,913.09

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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.