Home / 7,121.57-9,827.38-4,605.00

Finding the Fourth Proportional to 7,121.57, 9,827.38 and 4,605.00

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Solution

The fourth proportional to 7,121.57, 9,827.38 and 4,605.00 is: 6,354.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.57 : 9,827.38 = 4,605.00 : x
  2. Step 2: Convert to fraction form
    7,121.57/9,827.38 = 4,605.00/x
  3. Step 3: Cross multiply
    7,121.57x = 9,827.38 × 4,605.00
  4. Step 4: Simplify right side
    7,121.57x = 45,255,083.18
  5. Step 5: Solve for x
    x = 45,255,083.18/7,121.57
  6. Step 6: Final answer
    x = 6,354.65

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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.