Home / 6,439.95-9,657.90-3,971.07

Finding the Fourth Proportional to 6,439.95, 9,657.90 and 3,971.07

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Solution

The fourth proportional to 6,439.95, 9,657.90 and 3,971.07 is: 5,955.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.95 : 9,657.90 = 3,971.07 : x
  2. Step 2: Convert to fraction form
    6,439.95/9,657.90 = 3,971.07/x
  3. Step 3: Cross multiply
    6,439.95x = 9,657.90 × 3,971.07
  4. Step 4: Simplify right side
    6,439.95x = 38,352,196.95
  5. Step 5: Solve for x
    x = 38,352,196.95/6,439.95
  6. Step 6: Final answer
    x = 5,955.36

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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.