Home / 2,309.87-3,186.71-1,424.13

Finding the Fourth Proportional to 2,309.87, 3,186.71 and 1,424.13

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Solution

The fourth proportional to 2,309.87, 3,186.71 and 1,424.13 is: 1,964.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.87 : 3,186.71 = 1,424.13 : x
  2. Step 2: Convert to fraction form
    2,309.87/3,186.71 = 1,424.13/x
  3. Step 3: Cross multiply
    2,309.87x = 3,186.71 × 1,424.13
  4. Step 4: Simplify right side
    2,309.87x = 4,538,307.49
  5. Step 5: Solve for x
    x = 4,538,307.49/2,309.87
  6. Step 6: Final answer
    x = 1,964.75

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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.