Home / 2,782.81-4,154.33-2,685.47

Finding the Fourth Proportional to 2,782.81, 4,154.33 and 2,685.47

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Solution

The fourth proportional to 2,782.81, 4,154.33 and 2,685.47 is: 4,009.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.81 : 4,154.33 = 2,685.47 : x
  2. Step 2: Convert to fraction form
    2,782.81/4,154.33 = 2,685.47/x
  3. Step 3: Cross multiply
    2,782.81x = 4,154.33 × 2,685.47
  4. Step 4: Simplify right side
    2,782.81x = 11,156,294.39
  5. Step 5: Solve for x
    x = 11,156,294.39/2,782.81
  6. Step 6: Final answer
    x = 4,009.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.