Home / 4,680.40-7,020.90-1,393.22

Finding the Fourth Proportional to 4,680.40, 7,020.90 and 1,393.22

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Solution

The fourth proportional to 4,680.40, 7,020.90 and 1,393.22 is: 2,089.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,680.40 : 7,020.90 = 1,393.22 : x
  2. Step 2: Convert to fraction form
    4,680.40/7,020.90 = 1,393.22/x
  3. Step 3: Cross multiply
    4,680.40x = 7,020.90 × 1,393.22
  4. Step 4: Simplify right side
    4,680.40x = 9,781,623.19
  5. Step 5: Solve for x
    x = 9,781,623.19/4,680.40
  6. Step 6: Final answer
    x = 2,089.91

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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.