Home / 2,931.63-4,398.66-1,287.33

Finding the Fourth Proportional to 2,931.63, 4,398.66 and 1,287.33

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Solution

The fourth proportional to 2,931.63, 4,398.66 and 1,287.33 is: 1,931.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.63 : 4,398.66 = 1,287.33 : x
  2. Step 2: Convert to fraction form
    2,931.63/4,398.66 = 1,287.33/x
  3. Step 3: Cross multiply
    2,931.63x = 4,398.66 × 1,287.33
  4. Step 4: Simplify right side
    2,931.63x = 5,662,526.98
  5. Step 5: Solve for x
    x = 5,662,526.98/2,931.63
  6. Step 6: Final answer
    x = 1,931.53

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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.