Home / 1,931.39-2,891.60-1,619.74

Finding the Fourth Proportional to 1,931.39, 2,891.60 and 1,619.74

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Solution

The fourth proportional to 1,931.39, 2,891.60 and 1,619.74 is: 2,425.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.39 : 2,891.60 = 1,619.74 : x
  2. Step 2: Convert to fraction form
    1,931.39/2,891.60 = 1,619.74/x
  3. Step 3: Cross multiply
    1,931.39x = 2,891.60 × 1,619.74
  4. Step 4: Simplify right side
    1,931.39x = 4,683,617.63
  5. Step 5: Solve for x
    x = 4,683,617.63/1,931.39
  6. Step 6: Final answer
    x = 2,425.00

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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.