Home / 1,440.11-2,160.06-515.49

Finding the Fourth Proportional to 1,440.11, 2,160.06 and 515.49

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Solution

The fourth proportional to 1,440.11, 2,160.06 and 515.49 is: 773.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.11 : 2,160.06 = 515.49 : x
  2. Step 2: Convert to fraction form
    1,440.11/2,160.06 = 515.49/x
  3. Step 3: Cross multiply
    1,440.11x = 2,160.06 × 515.49
  4. Step 4: Simplify right side
    1,440.11x = 1,113,487.40
  5. Step 5: Solve for x
    x = 1,113,487.40/1,440.11
  6. Step 6: Final answer
    x = 773.20

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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.