Home / 2,914.40-4,021.08-1,865.60

Finding the Fourth Proportional to 2,914.40, 4,021.08 and 1,865.60

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Solution

The fourth proportional to 2,914.40, 4,021.08 and 1,865.60 is: 2,574.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,914.40 : 4,021.08 = 1,865.60 : x
  2. Step 2: Convert to fraction form
    2,914.40/4,021.08 = 1,865.60/x
  3. Step 3: Cross multiply
    2,914.40x = 4,021.08 × 1,865.60
  4. Step 4: Simplify right side
    2,914.40x = 7,501,726.85
  5. Step 5: Solve for x
    x = 7,501,726.85/2,914.40
  6. Step 6: Final answer
    x = 2,574.02

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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.