Home / 2,229.28-3,075.96-1,345.12

Finding the Fourth Proportional to 2,229.28, 3,075.96 and 1,345.12

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Solution

The fourth proportional to 2,229.28, 3,075.96 and 1,345.12 is: 1,856.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.28 : 3,075.96 = 1,345.12 : x
  2. Step 2: Convert to fraction form
    2,229.28/3,075.96 = 1,345.12/x
  3. Step 3: Cross multiply
    2,229.28x = 3,075.96 × 1,345.12
  4. Step 4: Simplify right side
    2,229.28x = 4,137,535.32
  5. Step 5: Solve for x
    x = 4,137,535.32/2,229.28
  6. Step 6: Final answer
    x = 1,856.00

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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.