Home / 8,712.12-12,020.40-4,934.46

Finding the Fourth Proportional to 8,712.12, 12,020.40 and 4,934.46

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Solution

The fourth proportional to 8,712.12, 12,020.40 and 4,934.46 is: 6,808.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.12 : 12,020.40 = 4,934.46 : x
  2. Step 2: Convert to fraction form
    8,712.12/12,020.40 = 4,934.46/x
  3. Step 3: Cross multiply
    8,712.12x = 12,020.40 × 4,934.46
  4. Step 4: Simplify right side
    8,712.12x = 59,314,182.98
  5. Step 5: Solve for x
    x = 59,314,182.98/8,712.12
  6. Step 6: Final answer
    x = 6,808.24

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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.