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Finding the Fourth Proportional to 6,989.81, 10,485.81 and 2,058.80

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Solution

The fourth proportional to 6,989.81, 10,485.81 and 2,058.80 is: 3,088.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.81 : 10,485.81 = 2,058.80 : x
  2. Step 2: Convert to fraction form
    6,989.81/10,485.81 = 2,058.80/x
  3. Step 3: Cross multiply
    6,989.81x = 10,485.81 × 2,058.80
  4. Step 4: Simplify right side
    6,989.81x = 21,588,133.20
  5. Step 5: Solve for x
    x = 21,588,133.20/6,989.81
  6. Step 6: Final answer
    x = 3,088.52

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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.