Home / 9,172.95-12,645.36-6,779.40

Finding the Fourth Proportional to 9,172.95, 12,645.36 and 6,779.40

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Solution

The fourth proportional to 9,172.95, 12,645.36 and 6,779.40 is: 9,345.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,172.95 : 12,645.36 = 6,779.40 : x
  2. Step 2: Convert to fraction form
    9,172.95/12,645.36 = 6,779.40/x
  3. Step 3: Cross multiply
    9,172.95x = 12,645.36 × 6,779.40
  4. Step 4: Simplify right side
    9,172.95x = 85,727,953.58
  5. Step 5: Solve for x
    x = 85,727,953.58/9,172.95
  6. Step 6: Final answer
    x = 9,345.73

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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.