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Finding the Fourth Proportional to 2,903.61, 4,005.12 and 1,910.16

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Solution

The fourth proportional to 2,903.61, 4,005.12 and 1,910.16 is: 2,634.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.61 : 4,005.12 = 1,910.16 : x
  2. Step 2: Convert to fraction form
    2,903.61/4,005.12 = 1,910.16/x
  3. Step 3: Cross multiply
    2,903.61x = 4,005.12 × 1,910.16
  4. Step 4: Simplify right side
    2,903.61x = 7,650,420.02
  5. Step 5: Solve for x
    x = 7,650,420.02/2,903.61
  6. Step 6: Final answer
    x = 2,634.80

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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.