Home / 1,943.65-2,681.38-1,313.95

Finding the Fourth Proportional to 1,943.65, 2,681.38 and 1,313.95

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Solution

The fourth proportional to 1,943.65, 2,681.38 and 1,313.95 is: 1,812.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.65 : 2,681.38 = 1,313.95 : x
  2. Step 2: Convert to fraction form
    1,943.65/2,681.38 = 1,313.95/x
  3. Step 3: Cross multiply
    1,943.65x = 2,681.38 × 1,313.95
  4. Step 4: Simplify right side
    1,943.65x = 3,523,199.25
  5. Step 5: Solve for x
    x = 3,523,199.25/1,943.65
  6. Step 6: Final answer
    x = 1,812.67

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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.