Home / 8,990.09-12,406.57-5,011.98

Finding the Fourth Proportional to 8,990.09, 12,406.57 and 5,011.98

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Solution

The fourth proportional to 8,990.09, 12,406.57 and 5,011.98 is: 6,916.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.09 : 12,406.57 = 5,011.98 : x
  2. Step 2: Convert to fraction form
    8,990.09/12,406.57 = 5,011.98/x
  3. Step 3: Cross multiply
    8,990.09x = 12,406.57 × 5,011.98
  4. Step 4: Simplify right side
    8,990.09x = 62,181,421.65
  5. Step 5: Solve for x
    x = 62,181,421.65/8,990.09
  6. Step 6: Final answer
    x = 6,916.66

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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.