Home / 3,156.86-4,355.01-2,038.16

Finding the Fourth Proportional to 3,156.86, 4,355.01 and 2,038.16

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Solution

The fourth proportional to 3,156.86, 4,355.01 and 2,038.16 is: 2,811.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.86 : 4,355.01 = 2,038.16 : x
  2. Step 2: Convert to fraction form
    3,156.86/4,355.01 = 2,038.16/x
  3. Step 3: Cross multiply
    3,156.86x = 4,355.01 × 2,038.16
  4. Step 4: Simplify right side
    3,156.86x = 8,876,218.07
  5. Step 5: Solve for x
    x = 8,876,218.07/3,156.86
  6. Step 6: Final answer
    x = 2,811.72

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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.