Home / 1,435.40-2,153.10-1,380.73

Finding the Fourth Proportional to 1,435.40, 2,153.10 and 1,380.73

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Solution

The fourth proportional to 1,435.40, 2,153.10 and 1,380.73 is: 2,071.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.40 : 2,153.10 = 1,380.73 : x
  2. Step 2: Convert to fraction form
    1,435.40/2,153.10 = 1,380.73/x
  3. Step 3: Cross multiply
    1,435.40x = 2,153.10 × 1,380.73
  4. Step 4: Simplify right side
    1,435.40x = 2,972,849.76
  5. Step 5: Solve for x
    x = 2,972,849.76/1,435.40
  6. Step 6: Final answer
    x = 2,071.10

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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.