Home / 3,190.40-4,402.72-1,864.32

Finding the Fourth Proportional to 3,190.40, 4,402.72 and 1,864.32

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Solution

The fourth proportional to 3,190.40, 4,402.72 and 1,864.32 is: 2,572.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.40 : 4,402.72 = 1,864.32 : x
  2. Step 2: Convert to fraction form
    3,190.40/4,402.72 = 1,864.32/x
  3. Step 3: Cross multiply
    3,190.40x = 4,402.72 × 1,864.32
  4. Step 4: Simplify right side
    3,190.40x = 8,208,078.95
  5. Step 5: Solve for x
    x = 8,208,078.95/3,190.40
  6. Step 6: Final answer
    x = 2,572.74

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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.