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Finding the Fourth Proportional to 9,779.78, 14,671.71 and 3,205.45

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Solution

The fourth proportional to 9,779.78, 14,671.71 and 3,205.45 is: 4,808.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,779.78 : 14,671.71 = 3,205.45 : x
  2. Step 2: Convert to fraction form
    9,779.78/14,671.71 = 3,205.45/x
  3. Step 3: Cross multiply
    9,779.78x = 14,671.71 × 3,205.45
  4. Step 4: Simplify right side
    9,779.78x = 47,029,373.79
  5. Step 5: Solve for x
    x = 47,029,373.79/9,779.78
  6. Step 6: Final answer
    x = 4,808.84

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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.