Home / 1,979.12-2,734.08-1,562.24

Finding the Fourth Proportional to 1,979.12, 2,734.08 and 1,562.24

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Solution

The fourth proportional to 1,979.12, 2,734.08 and 1,562.24 is: 2,158.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.12 : 2,734.08 = 1,562.24 : x
  2. Step 2: Convert to fraction form
    1,979.12/2,734.08 = 1,562.24/x
  3. Step 3: Cross multiply
    1,979.12x = 2,734.08 × 1,562.24
  4. Step 4: Simplify right side
    1,979.12x = 4,271,289.14
  5. Step 5: Solve for x
    x = 4,271,289.14/1,979.12
  6. Step 6: Final answer
    x = 2,158.18

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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.