Home / 3,143.50-4,338.80-1,817.01

Finding the Fourth Proportional to 3,143.50, 4,338.80 and 1,817.01

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Solution

The fourth proportional to 3,143.50, 4,338.80 and 1,817.01 is: 2,507.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.50 : 4,338.80 = 1,817.01 : x
  2. Step 2: Convert to fraction form
    3,143.50/4,338.80 = 1,817.01/x
  3. Step 3: Cross multiply
    3,143.50x = 4,338.80 × 1,817.01
  4. Step 4: Simplify right side
    3,143.50x = 7,883,642.99
  5. Step 5: Solve for x
    x = 7,883,642.99/3,143.50
  6. Step 6: Final answer
    x = 2,507.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.