Home / 2,275.40-3,409.90-1,685.80

Finding the Fourth Proportional to 2,275.40, 3,409.90 and 1,685.80

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Solution

The fourth proportional to 2,275.40, 3,409.90 and 1,685.80 is: 2,526.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.40 : 3,409.90 = 1,685.80 : x
  2. Step 2: Convert to fraction form
    2,275.40/3,409.90 = 1,685.80/x
  3. Step 3: Cross multiply
    2,275.40x = 3,409.90 × 1,685.80
  4. Step 4: Simplify right side
    2,275.40x = 5,748,409.42
  5. Step 5: Solve for x
    x = 5,748,409.42/2,275.40
  6. Step 6: Final answer
    x = 2,526.33

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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.