Home / 1,877.50-2,816.20-490.79

Finding the Fourth Proportional to 1,877.50, 2,816.20 and 490.79

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Solution

The fourth proportional to 1,877.50, 2,816.20 and 490.79 is: 736.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.50 : 2,816.20 = 490.79 : x
  2. Step 2: Convert to fraction form
    1,877.50/2,816.20 = 490.79/x
  3. Step 3: Cross multiply
    1,877.50x = 2,816.20 × 490.79
  4. Step 4: Simplify right side
    1,877.50x = 1,382,162.80
  5. Step 5: Solve for x
    x = 1,382,162.80/1,877.50
  6. Step 6: Final answer
    x = 736.17

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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.