Home / 8,921.18-12,312.09-4,942.46

Finding the Fourth Proportional to 8,921.18, 12,312.09 and 4,942.46

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Solution

The fourth proportional to 8,921.18, 12,312.09 and 4,942.46 is: 6,821.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.18 : 12,312.09 = 4,942.46 : x
  2. Step 2: Convert to fraction form
    8,921.18/12,312.09 = 4,942.46/x
  3. Step 3: Cross multiply
    8,921.18x = 12,312.09 × 4,942.46
  4. Step 4: Simplify right side
    8,921.18x = 60,852,012.34
  5. Step 5: Solve for x
    x = 60,852,012.34/8,921.18
  6. Step 6: Final answer
    x = 6,821.07

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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.