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Finding the Fourth Proportional to 2,653.16, 3,979.83 and 898.19

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Solution

The fourth proportional to 2,653.16, 3,979.83 and 898.19 is: 1,347.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.16 : 3,979.83 = 898.19 : x
  2. Step 2: Convert to fraction form
    2,653.16/3,979.83 = 898.19/x
  3. Step 3: Cross multiply
    2,653.16x = 3,979.83 × 898.19
  4. Step 4: Simplify right side
    2,653.16x = 3,574,641.90
  5. Step 5: Solve for x
    x = 3,574,641.90/2,653.16
  6. Step 6: Final answer
    x = 1,347.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.