Home / 8,712.58-12,017.28-5,727.46

Finding the Fourth Proportional to 8,712.58, 12,017.28 and 5,727.46

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Solution

The fourth proportional to 8,712.58, 12,017.28 and 5,727.46 is: 7,899.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.58 : 12,017.28 = 5,727.46 : x
  2. Step 2: Convert to fraction form
    8,712.58/12,017.28 = 5,727.46/x
  3. Step 3: Cross multiply
    8,712.58x = 12,017.28 × 5,727.46
  4. Step 4: Simplify right side
    8,712.58x = 68,828,490.51
  5. Step 5: Solve for x
    x = 68,828,490.51/8,712.58
  6. Step 6: Final answer
    x = 7,899.90

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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.