Home / 8,685.81-11,986.10-4,706.84

Finding the Fourth Proportional to 8,685.81, 11,986.10 and 4,706.84

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Solution

The fourth proportional to 8,685.81, 11,986.10 and 4,706.84 is: 6,495.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.81 : 11,986.10 = 4,706.84 : x
  2. Step 2: Convert to fraction form
    8,685.81/11,986.10 = 4,706.84/x
  3. Step 3: Cross multiply
    8,685.81x = 11,986.10 × 4,706.84
  4. Step 4: Simplify right side
    8,685.81x = 56,416,613.19
  5. Step 5: Solve for x
    x = 56,416,613.19/8,685.81
  6. Step 6: Final answer
    x = 6,495.26

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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.