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Finding the Fourth Proportional to 9,779.71, 14,671.09 and 3,539.06

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Solution

The fourth proportional to 9,779.71, 14,671.09 and 3,539.06 is: 5,309.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,779.71 : 14,671.09 = 3,539.06 : x
  2. Step 2: Convert to fraction form
    9,779.71/14,671.09 = 3,539.06/x
  3. Step 3: Cross multiply
    9,779.71x = 14,671.09 × 3,539.06
  4. Step 4: Simplify right side
    9,779.71x = 51,921,867.78
  5. Step 5: Solve for x
    x = 51,921,867.78/9,779.71
  6. Step 6: Final answer
    x = 5,309.14

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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.