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Finding the Fourth Proportional to 2,848.40, 4,277.40 and 1,878.80

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Solution

The fourth proportional to 2,848.40, 4,277.40 and 1,878.80 is: 2,821.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,848.40 : 4,277.40 = 1,878.80 : x
  2. Step 2: Convert to fraction form
    2,848.40/4,277.40 = 1,878.80/x
  3. Step 3: Cross multiply
    2,848.40x = 4,277.40 × 1,878.80
  4. Step 4: Simplify right side
    2,848.40x = 8,036,379.12
  5. Step 5: Solve for x
    x = 8,036,379.12/2,848.40
  6. Step 6: Final answer
    x = 2,821.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.