Home / 2,937.60-4,054.80-2,419.20

Finding the Fourth Proportional to 2,937.60, 4,054.80 and 2,419.20

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Solution

The fourth proportional to 2,937.60, 4,054.80 and 2,419.20 is: 3,339.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,937.60 : 4,054.80 = 2,419.20 : x
  2. Step 2: Convert to fraction form
    2,937.60/4,054.80 = 2,419.20/x
  3. Step 3: Cross multiply
    2,937.60x = 4,054.80 × 2,419.20
  4. Step 4: Simplify right side
    2,937.60x = 9,809,372.16
  5. Step 5: Solve for x
    x = 9,809,372.16/2,937.60
  6. Step 6: Final answer
    x = 3,339.25

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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.