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Finding the Fourth Proportional to 1,878.62, 2,592.48 and 1,039.32

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Solution

The fourth proportional to 1,878.62, 2,592.48 and 1,039.32 is: 1,434.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.62 : 2,592.48 = 1,039.32 : x
  2. Step 2: Convert to fraction form
    1,878.62/2,592.48 = 1,039.32/x
  3. Step 3: Cross multiply
    1,878.62x = 2,592.48 × 1,039.32
  4. Step 4: Simplify right side
    1,878.62x = 2,694,416.31
  5. Step 5: Solve for x
    x = 2,694,416.31/1,878.62
  6. Step 6: Final answer
    x = 1,434.25

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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.