Home / 4,291.52-6,420.76-3,980.48

Finding the Fourth Proportional to 4,291.52, 6,420.76 and 3,980.48

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Solution

The fourth proportional to 4,291.52, 6,420.76 and 3,980.48 is: 5,955.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,291.52 : 6,420.76 = 3,980.48 : x
  2. Step 2: Convert to fraction form
    4,291.52/6,420.76 = 3,980.48/x
  3. Step 3: Cross multiply
    4,291.52x = 6,420.76 × 3,980.48
  4. Step 4: Simplify right side
    4,291.52x = 25,557,706.76
  5. Step 5: Solve for x
    x = 25,557,706.76/4,291.52
  6. Step 6: Final answer
    x = 5,955.40

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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.