Home / 2,845.77-3,925.48-2,215.30

Finding the Fourth Proportional to 2,845.77, 3,925.48 and 2,215.30

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Solution

The fourth proportional to 2,845.77, 3,925.48 and 2,215.30 is: 3,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.77 : 3,925.48 = 2,215.30 : x
  2. Step 2: Convert to fraction form
    2,845.77/3,925.48 = 2,215.30/x
  3. Step 3: Cross multiply
    2,845.77x = 3,925.48 × 2,215.30
  4. Step 4: Simplify right side
    2,845.77x = 8,696,118.42
  5. Step 5: Solve for x
    x = 8,696,118.42/2,845.77
  6. Step 6: Final answer
    x = 3,055.80

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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.