Home / 8,619.57-11,870.15-8,225.91

Finding the Fourth Proportional to 8,619.57, 11,870.15 and 8,225.91

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Solution

The fourth proportional to 8,619.57, 11,870.15 and 8,225.91 is: 11,328.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.57 : 11,870.15 = 8,225.91 : x
  2. Step 2: Convert to fraction form
    8,619.57/11,870.15 = 8,225.91/x
  3. Step 3: Cross multiply
    8,619.57x = 11,870.15 × 8,225.91
  4. Step 4: Simplify right side
    8,619.57x = 97,642,744.46
  5. Step 5: Solve for x
    x = 97,642,744.46/8,619.57
  6. Step 6: Final answer
    x = 11,328.03

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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.