Home / 8,685.90-11,986.52-4,707.05

Finding the Fourth Proportional to 8,685.90, 11,986.52 and 4,707.05

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Solution

The fourth proportional to 8,685.90, 11,986.52 and 4,707.05 is: 6,495.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.90 : 11,986.52 = 4,707.05 : x
  2. Step 2: Convert to fraction form
    8,685.90/11,986.52 = 4,707.05/x
  3. Step 3: Cross multiply
    8,685.90x = 11,986.52 × 4,707.05
  4. Step 4: Simplify right side
    8,685.90x = 56,421,065.50
  5. Step 5: Solve for x
    x = 56,421,065.50/8,685.90
  6. Step 6: Final answer
    x = 6,495.71

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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.