Home / 8,683.64-12,999.86-5,386.12

Finding the Fourth Proportional to 8,683.64, 12,999.86 and 5,386.12

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Solution

The fourth proportional to 8,683.64, 12,999.86 and 5,386.12 is: 8,063.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,683.64 : 12,999.86 = 5,386.12 : x
  2. Step 2: Convert to fraction form
    8,683.64/12,999.86 = 5,386.12/x
  3. Step 3: Cross multiply
    8,683.64x = 12,999.86 × 5,386.12
  4. Step 4: Simplify right side
    8,683.64x = 70,018,805.94
  5. Step 5: Solve for x
    x = 70,018,805.94/8,683.64
  6. Step 6: Final answer
    x = 8,063.30

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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.