Home / 2,903.92-4,008.40-1,961.12

Finding the Fourth Proportional to 2,903.92, 4,008.40 and 1,961.12

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Solution

The fourth proportional to 2,903.92, 4,008.40 and 1,961.12 is: 2,707.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.92 : 4,008.40 = 1,961.12 : x
  2. Step 2: Convert to fraction form
    2,903.92/4,008.40 = 1,961.12/x
  3. Step 3: Cross multiply
    2,903.92x = 4,008.40 × 1,961.12
  4. Step 4: Simplify right side
    2,903.92x = 7,860,953.41
  5. Step 5: Solve for x
    x = 7,860,953.41/2,903.92
  6. Step 6: Final answer
    x = 2,707.01

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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.