Home / 1,439.45-2,148.49-1,240.94

Finding the Fourth Proportional to 1,439.45, 2,148.49 and 1,240.94

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Solution

The fourth proportional to 1,439.45, 2,148.49 and 1,240.94 is: 1,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.45 : 2,148.49 = 1,240.94 : x
  2. Step 2: Convert to fraction form
    1,439.45/2,148.49 = 1,240.94/x
  3. Step 3: Cross multiply
    1,439.45x = 2,148.49 × 1,240.94
  4. Step 4: Simplify right side
    1,439.45x = 2,666,147.18
  5. Step 5: Solve for x
    x = 2,666,147.18/1,439.45
  6. Step 6: Final answer
    x = 1,852.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.