Home / 2,828.77-4,264.85-2,638.19

Finding the Fourth Proportional to 2,828.77, 4,264.85 and 2,638.19

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Solution

The fourth proportional to 2,828.77, 4,264.85 and 2,638.19 is: 3,977.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.77 : 4,264.85 = 2,638.19 : x
  2. Step 2: Convert to fraction form
    2,828.77/4,264.85 = 2,638.19/x
  3. Step 3: Cross multiply
    2,828.77x = 4,264.85 × 2,638.19
  4. Step 4: Simplify right side
    2,828.77x = 11,251,482.09
  5. Step 5: Solve for x
    x = 11,251,482.09/2,828.77
  6. Step 6: Final answer
    x = 3,977.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.