Home / 4,823.80-7,221.30-4,305.40

Finding the Fourth Proportional to 4,823.80, 7,221.30 and 4,305.40

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Solution

The fourth proportional to 4,823.80, 7,221.30 and 4,305.40 is: 6,445.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,823.80 : 7,221.30 = 4,305.40 : x
  2. Step 2: Convert to fraction form
    4,823.80/7,221.30 = 4,305.40/x
  3. Step 3: Cross multiply
    4,823.80x = 7,221.30 × 4,305.40
  4. Step 4: Simplify right side
    4,823.80x = 31,090,585.02
  5. Step 5: Solve for x
    x = 31,090,585.02/4,823.80
  6. Step 6: Final answer
    x = 6,445.25

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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.