Home / 2,157.63-2,977.52-1,226.13

Finding the Fourth Proportional to 2,157.63, 2,977.52 and 1,226.13

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Solution

The fourth proportional to 2,157.63, 2,977.52 and 1,226.13 is: 1,692.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.63 : 2,977.52 = 1,226.13 : x
  2. Step 2: Convert to fraction form
    2,157.63/2,977.52 = 1,226.13/x
  3. Step 3: Cross multiply
    2,157.63x = 2,977.52 × 1,226.13
  4. Step 4: Simplify right side
    2,157.63x = 3,650,826.60
  5. Step 5: Solve for x
    x = 3,650,826.60/2,157.63
  6. Step 6: Final answer
    x = 1,692.05

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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.