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Finding the Fourth Proportional to 2,307.66, 3,188.88 and 1,887.86

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Solution

The fourth proportional to 2,307.66, 3,188.88 and 1,887.86 is: 2,608.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,307.66 : 3,188.88 = 1,887.86 : x
  2. Step 2: Convert to fraction form
    2,307.66/3,188.88 = 1,887.86/x
  3. Step 3: Cross multiply
    2,307.66x = 3,188.88 × 1,887.86
  4. Step 4: Simplify right side
    2,307.66x = 6,020,162.09
  5. Step 5: Solve for x
    x = 6,020,162.09/2,307.66
  6. Step 6: Final answer
    x = 2,608.77

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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.