Home / 6,911.36-10,368.72-1,981.12

Finding the Fourth Proportional to 6,911.36, 10,368.72 and 1,981.12

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Solution

The fourth proportional to 6,911.36, 10,368.72 and 1,981.12 is: 2,972.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,911.36 : 10,368.72 = 1,981.12 : x
  2. Step 2: Convert to fraction form
    6,911.36/10,368.72 = 1,981.12/x
  3. Step 3: Cross multiply
    6,911.36x = 10,368.72 × 1,981.12
  4. Step 4: Simplify right side
    6,911.36x = 20,541,678.57
  5. Step 5: Solve for x
    x = 20,541,678.57/6,911.36
  6. Step 6: Final answer
    x = 2,972.16

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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.