Home / 1,681.92-2,519.04-1,240.32

Finding the Fourth Proportional to 1,681.92, 2,519.04 and 1,240.32

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Solution

The fourth proportional to 1,681.92, 2,519.04 and 1,240.32 is: 1,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.92 : 2,519.04 = 1,240.32 : x
  2. Step 2: Convert to fraction form
    1,681.92/2,519.04 = 1,240.32/x
  3. Step 3: Cross multiply
    1,681.92x = 2,519.04 × 1,240.32
  4. Step 4: Simplify right side
    1,681.92x = 3,124,415.69
  5. Step 5: Solve for x
    x = 3,124,415.69/1,681.92
  6. Step 6: Final answer
    x = 1,857.65

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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.