Home / 6,991.18-10,490.40-6,587.80

Finding the Fourth Proportional to 6,991.18, 10,490.40 and 6,587.80

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Solution

The fourth proportional to 6,991.18, 10,490.40 and 6,587.80 is: 9,885.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.18 : 10,490.40 = 6,587.80 : x
  2. Step 2: Convert to fraction form
    6,991.18/10,490.40 = 6,587.80/x
  3. Step 3: Cross multiply
    6,991.18x = 10,490.40 × 6,587.80
  4. Step 4: Simplify right side
    6,991.18x = 69,108,657.12
  5. Step 5: Solve for x
    x = 69,108,657.12/6,991.18
  6. Step 6: Final answer
    x = 9,885.12

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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.