Home / 2,421.80-3,647.66-2,305.16

Finding the Fourth Proportional to 2,421.80, 3,647.66 and 2,305.16

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Solution

The fourth proportional to 2,421.80, 3,647.66 and 2,305.16 is: 3,471.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.80 : 3,647.66 = 2,305.16 : x
  2. Step 2: Convert to fraction form
    2,421.80/3,647.66 = 2,305.16/x
  3. Step 3: Cross multiply
    2,421.80x = 3,647.66 × 2,305.16
  4. Step 4: Simplify right side
    2,421.80x = 8,408,430.32
  5. Step 5: Solve for x
    x = 8,408,430.32/2,421.80
  6. Step 6: Final answer
    x = 3,471.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.