Home / 6,971.76-9,619.80-5,113.20

Finding the Fourth Proportional to 6,971.76, 9,619.80 and 5,113.20

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Solution

The fourth proportional to 6,971.76, 9,619.80 and 5,113.20 is: 7,055.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,971.76 : 9,619.80 = 5,113.20 : x
  2. Step 2: Convert to fraction form
    6,971.76/9,619.80 = 5,113.20/x
  3. Step 3: Cross multiply
    6,971.76x = 9,619.80 × 5,113.20
  4. Step 4: Simplify right side
    6,971.76x = 49,187,961.36
  5. Step 5: Solve for x
    x = 49,187,961.36/6,971.76
  6. Step 6: Final answer
    x = 7,055.31

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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.