Home / 6,980.27-9,622.81-4,990.10

Finding the Fourth Proportional to 6,980.27, 9,622.81 and 4,990.10

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Solution

The fourth proportional to 6,980.27, 9,622.81 and 4,990.10 is: 6,879.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,980.27 : 9,622.81 = 4,990.10 : x
  2. Step 2: Convert to fraction form
    6,980.27/9,622.81 = 4,990.10/x
  3. Step 3: Cross multiply
    6,980.27x = 9,622.81 × 4,990.10
  4. Step 4: Simplify right side
    6,980.27x = 48,018,784.18
  5. Step 5: Solve for x
    x = 48,018,784.18/6,980.27
  6. Step 6: Final answer
    x = 6,879.22

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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.