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Finding the Fourth Proportional to 1,925.74, 2,887.95 and 626.91

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Solution

The fourth proportional to 1,925.74, 2,887.95 and 626.91 is: 940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,925.74 : 2,887.95 = 626.91 : x
  2. Step 2: Convert to fraction form
    1,925.74/2,887.95 = 626.91/x
  3. Step 3: Cross multiply
    1,925.74x = 2,887.95 × 626.91
  4. Step 4: Simplify right side
    1,925.74x = 1,810,476.26
  5. Step 5: Solve for x
    x = 1,810,476.26/1,925.74
  6. Step 6: Final answer
    x = 940.15

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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.