Home / 2,926.48-4,039.20-1,878.40

Finding the Fourth Proportional to 2,926.48, 4,039.20 and 1,878.40

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Solution

The fourth proportional to 2,926.48, 4,039.20 and 1,878.40 is: 2,592.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,926.48 : 4,039.20 = 1,878.40 : x
  2. Step 2: Convert to fraction form
    2,926.48/4,039.20 = 1,878.40/x
  3. Step 3: Cross multiply
    2,926.48x = 4,039.20 × 1,878.40
  4. Step 4: Simplify right side
    2,926.48x = 7,587,233.28
  5. Step 5: Solve for x
    x = 7,587,233.28/2,926.48
  6. Step 6: Final answer
    x = 2,592.61

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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.