Home / 6,911.12-10,366.65-1,980.79

Finding the Fourth Proportional to 6,911.12, 10,366.65 and 1,980.79

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Solution

The fourth proportional to 6,911.12, 10,366.65 and 1,980.79 is: 2,971.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,911.12 : 10,366.65 = 1,980.79 : x
  2. Step 2: Convert to fraction form
    6,911.12/10,366.65 = 1,980.79/x
  3. Step 3: Cross multiply
    6,911.12x = 10,366.65 × 1,980.79
  4. Step 4: Simplify right side
    6,911.12x = 20,534,130.74
  5. Step 5: Solve for x
    x = 20,534,130.74/6,911.12
  6. Step 6: Final answer
    x = 2,971.17

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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.