Home / 7,920.20-10,929.54-4,383.08

Finding the Fourth Proportional to 7,920.20, 10,929.54 and 4,383.08

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Solution

The fourth proportional to 7,920.20, 10,929.54 and 4,383.08 is: 6,048.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.20 : 10,929.54 = 4,383.08 : x
  2. Step 2: Convert to fraction form
    7,920.20/10,929.54 = 4,383.08/x
  3. Step 3: Cross multiply
    7,920.20x = 10,929.54 × 4,383.08
  4. Step 4: Simplify right side
    7,920.20x = 47,905,048.18
  5. Step 5: Solve for x
    x = 47,905,048.18/7,920.20
  6. Step 6: Final answer
    x = 6,048.46

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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.