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Finding the Fourth Proportional to 1,887.91, 2,605.16 and 1,048.55

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Solution

The fourth proportional to 1,887.91, 2,605.16 and 1,048.55 is: 1,446.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.91 : 2,605.16 = 1,048.55 : x
  2. Step 2: Convert to fraction form
    1,887.91/2,605.16 = 1,048.55/x
  3. Step 3: Cross multiply
    1,887.91x = 2,605.16 × 1,048.55
  4. Step 4: Simplify right side
    1,887.91x = 2,731,630.11
  5. Step 5: Solve for x
    x = 2,731,630.11/1,887.91
  6. Step 6: Final answer
    x = 1,446.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.