Home / 8,921.30-12,312.15-4,943.66

Finding the Fourth Proportional to 8,921.30, 12,312.15 and 4,943.66

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Solution

The fourth proportional to 8,921.30, 12,312.15 and 4,943.66 is: 6,822.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.30 : 12,312.15 = 4,943.66 : x
  2. Step 2: Convert to fraction form
    8,921.30/12,312.15 = 4,943.66/x
  3. Step 3: Cross multiply
    8,921.30x = 12,312.15 × 4,943.66
  4. Step 4: Simplify right side
    8,921.30x = 60,867,083.47
  5. Step 5: Solve for x
    x = 60,867,083.47/8,921.30
  6. Step 6: Final answer
    x = 6,822.67

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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.