Home / 8,712.15-12,021.37-5,127.29

Finding the Fourth Proportional to 8,712.15, 12,021.37 and 5,127.29

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Solution

The fourth proportional to 8,712.15, 12,021.37 and 5,127.29 is: 7,074.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.15 : 12,021.37 = 5,127.29 : x
  2. Step 2: Convert to fraction form
    8,712.15/12,021.37 = 5,127.29/x
  3. Step 3: Cross multiply
    8,712.15x = 12,021.37 × 5,127.29
  4. Step 4: Simplify right side
    8,712.15x = 61,637,050.19
  5. Step 5: Solve for x
    x = 61,637,050.19/8,712.15
  6. Step 6: Final answer
    x = 7,074.84

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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.