Home / 4,679.28-7,020.10-1,392.36

Finding the Fourth Proportional to 4,679.28, 7,020.10 and 1,392.36

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Solution

The fourth proportional to 4,679.28, 7,020.10 and 1,392.36 is: 2,088.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.28 : 7,020.10 = 1,392.36 : x
  2. Step 2: Convert to fraction form
    4,679.28/7,020.10 = 1,392.36/x
  3. Step 3: Cross multiply
    4,679.28x = 7,020.10 × 1,392.36
  4. Step 4: Simplify right side
    4,679.28x = 9,774,506.44
  5. Step 5: Solve for x
    x = 9,774,506.44/4,679.28
  6. Step 6: Final answer
    x = 2,088.89

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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.