Home / 2,319.84-3,201.40-1,388.34

Finding the Fourth Proportional to 2,319.84, 3,201.40 and 1,388.34

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Solution

The fourth proportional to 2,319.84, 3,201.40 and 1,388.34 is: 1,915.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.84 : 3,201.40 = 1,388.34 : x
  2. Step 2: Convert to fraction form
    2,319.84/3,201.40 = 1,388.34/x
  3. Step 3: Cross multiply
    2,319.84x = 3,201.40 × 1,388.34
  4. Step 4: Simplify right side
    2,319.84x = 4,444,640.21
  5. Step 5: Solve for x
    x = 4,444,640.21/2,319.84
  6. Step 6: Final answer
    x = 1,915.92

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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.