Home / 8,403.81-12,602.77-2,479.12

Finding the Fourth Proportional to 8,403.81, 12,602.77 and 2,479.12

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Solution

The fourth proportional to 8,403.81, 12,602.77 and 2,479.12 is: 3,717.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,403.81 : 12,602.77 = 2,479.12 : x
  2. Step 2: Convert to fraction form
    8,403.81/12,602.77 = 2,479.12/x
  3. Step 3: Cross multiply
    8,403.81x = 12,602.77 × 2,479.12
  4. Step 4: Simplify right side
    8,403.81x = 31,243,779.16
  5. Step 5: Solve for x
    x = 31,243,779.16/8,403.81
  6. Step 6: Final answer
    x = 3,717.81

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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.