Home / 2,979.12-4,111.45-1,653.08

Finding the Fourth Proportional to 2,979.12, 4,111.45 and 1,653.08

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Solution

The fourth proportional to 2,979.12, 4,111.45 and 1,653.08 is: 2,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.12 : 4,111.45 = 1,653.08 : x
  2. Step 2: Convert to fraction form
    2,979.12/4,111.45 = 1,653.08/x
  3. Step 3: Cross multiply
    2,979.12x = 4,111.45 × 1,653.08
  4. Step 4: Simplify right side
    2,979.12x = 6,796,555.77
  5. Step 5: Solve for x
    x = 6,796,555.77/2,979.12
  6. Step 6: Final answer
    x = 2,281.40

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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.