Home / 1,816.32-2,502.90-1,291.44

Finding the Fourth Proportional to 1,816.32, 2,502.90 and 1,291.44

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Solution

The fourth proportional to 1,816.32, 2,502.90 and 1,291.44 is: 1,779.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.32 : 2,502.90 = 1,291.44 : x
  2. Step 2: Convert to fraction form
    1,816.32/2,502.90 = 1,291.44/x
  3. Step 3: Cross multiply
    1,816.32x = 2,502.90 × 1,291.44
  4. Step 4: Simplify right side
    1,816.32x = 3,232,345.18
  5. Step 5: Solve for x
    x = 3,232,345.18/1,816.32
  6. Step 6: Final answer
    x = 1,779.61

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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.