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Finding the Fourth Proportional to 1,897.79, 2,847.77 and 1,515.47

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Solution

The fourth proportional to 1,897.79, 2,847.77 and 1,515.47 is: 2,274.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.79 : 2,847.77 = 1,515.47 : x
  2. Step 2: Convert to fraction form
    1,897.79/2,847.77 = 1,515.47/x
  3. Step 3: Cross multiply
    1,897.79x = 2,847.77 × 1,515.47
  4. Step 4: Simplify right side
    1,897.79x = 4,315,715.23
  5. Step 5: Solve for x
    x = 4,315,715.23/1,897.79
  6. Step 6: Final answer
    x = 2,274.07

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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.