Home / 2,804.16-3,869.60-1,561.92

Finding the Fourth Proportional to 2,804.16, 3,869.60 and 1,561.92

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Solution

The fourth proportional to 2,804.16, 3,869.60 and 1,561.92 is: 2,155.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,804.16 : 3,869.60 = 1,561.92 : x
  2. Step 2: Convert to fraction form
    2,804.16/3,869.60 = 1,561.92/x
  3. Step 3: Cross multiply
    2,804.16x = 3,869.60 × 1,561.92
  4. Step 4: Simplify right side
    2,804.16x = 6,044,005.63
  5. Step 5: Solve for x
    x = 6,044,005.63/2,804.16
  6. Step 6: Final answer
    x = 2,155.37

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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.