Home / 7,155.36-9,875.04-4,172.16

Finding the Fourth Proportional to 7,155.36, 9,875.04 and 4,172.16

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Solution

The fourth proportional to 7,155.36, 9,875.04 and 4,172.16 is: 5,757.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.36 : 9,875.04 = 4,172.16 : x
  2. Step 2: Convert to fraction form
    7,155.36/9,875.04 = 4,172.16/x
  3. Step 3: Cross multiply
    7,155.36x = 9,875.04 × 4,172.16
  4. Step 4: Simplify right side
    7,155.36x = 41,200,246.89
  5. Step 5: Solve for x
    x = 41,200,246.89/7,155.36
  6. Step 6: Final answer
    x = 5,757.96

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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.