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Finding the Fourth Proportional to 1,878.36, 2,592.12 and 1,039.08

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Solution

The fourth proportional to 1,878.36, 2,592.12 and 1,039.08 is: 1,433.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.36 : 2,592.12 = 1,039.08 : x
  2. Step 2: Convert to fraction form
    1,878.36/2,592.12 = 1,039.08/x
  3. Step 3: Cross multiply
    1,878.36x = 2,592.12 × 1,039.08
  4. Step 4: Simplify right side
    1,878.36x = 2,693,420.05
  5. Step 5: Solve for x
    x = 2,693,420.05/1,878.36
  6. Step 6: Final answer
    x = 1,433.92

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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.