Home / 1,680.09-2,521.05-814.41

Finding the Fourth Proportional to 1,680.09, 2,521.05 and 814.41

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Solution

The fourth proportional to 1,680.09, 2,521.05 and 814.41 is: 1,222.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.09 : 2,521.05 = 814.41 : x
  2. Step 2: Convert to fraction form
    1,680.09/2,521.05 = 814.41/x
  3. Step 3: Cross multiply
    1,680.09x = 2,521.05 × 814.41
  4. Step 4: Simplify right side
    1,680.09x = 2,053,160.40
  5. Step 5: Solve for x
    x = 2,053,160.40/1,680.09
  6. Step 6: Final answer
    x = 1,222.05

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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.