Home / 3,156.20-4,354.72-1,897.32

Finding the Fourth Proportional to 3,156.20, 4,354.72 and 1,897.32

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Solution

The fourth proportional to 3,156.20, 4,354.72 and 1,897.32 is: 2,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.20 : 4,354.72 = 1,897.32 : x
  2. Step 2: Convert to fraction form
    3,156.20/4,354.72 = 1,897.32/x
  3. Step 3: Cross multiply
    3,156.20x = 4,354.72 × 1,897.32
  4. Step 4: Simplify right side
    3,156.20x = 8,262,297.35
  5. Step 5: Solve for x
    x = 8,262,297.35/3,156.20
  6. Step 6: Final answer
    x = 2,617.80

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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.