Home / 3,501.80-5,250.90-1,309.40

Finding the Fourth Proportional to 3,501.80, 5,250.90 and 1,309.40

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Solution

The fourth proportional to 3,501.80, 5,250.90 and 1,309.40 is: 1,963.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,501.80 : 5,250.90 = 1,309.40 : x
  2. Step 2: Convert to fraction form
    3,501.80/5,250.90 = 1,309.40/x
  3. Step 3: Cross multiply
    3,501.80x = 5,250.90 × 1,309.40
  4. Step 4: Simplify right side
    3,501.80x = 6,875,528.46
  5. Step 5: Solve for x
    x = 6,875,528.46/3,501.80
  6. Step 6: Final answer
    x = 1,963.43

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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.