Home / 2,585.36-3,565.04-1,921.12

Finding the Fourth Proportional to 2,585.36, 3,565.04 and 1,921.12

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Solution

The fourth proportional to 2,585.36, 3,565.04 and 1,921.12 is: 2,649.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,585.36 : 3,565.04 = 1,921.12 : x
  2. Step 2: Convert to fraction form
    2,585.36/3,565.04 = 1,921.12/x
  3. Step 3: Cross multiply
    2,585.36x = 3,565.04 × 1,921.12
  4. Step 4: Simplify right side
    2,585.36x = 6,848,869.64
  5. Step 5: Solve for x
    x = 6,848,869.64/2,585.36
  6. Step 6: Final answer
    x = 2,649.10

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Double scale
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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.