Home / 9,190.95-12,669.93-7,172.10

Finding the Fourth Proportional to 9,190.95, 12,669.93 and 7,172.10

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Solution

The fourth proportional to 9,190.95, 12,669.93 and 7,172.10 is: 9,886.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,190.95 : 12,669.93 = 7,172.10 : x
  2. Step 2: Convert to fraction form
    9,190.95/12,669.93 = 7,172.10/x
  3. Step 3: Cross multiply
    9,190.95x = 12,669.93 × 7,172.10
  4. Step 4: Simplify right side
    9,190.95x = 90,870,004.95
  5. Step 5: Solve for x
    x = 90,870,004.95/9,190.95
  6. Step 6: Final answer
    x = 9,886.90

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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.