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Finding the Fourth Proportional to 7,185.04, 9,916.54 and 4,200.30

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Solution

The fourth proportional to 7,185.04, 9,916.54 and 4,200.30 is: 5,797.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,185.04 : 9,916.54 = 4,200.30 : x
  2. Step 2: Convert to fraction form
    7,185.04/9,916.54 = 4,200.30/x
  3. Step 3: Cross multiply
    7,185.04x = 9,916.54 × 4,200.30
  4. Step 4: Simplify right side
    7,185.04x = 41,652,432.46
  5. Step 5: Solve for x
    x = 41,652,432.46/7,185.04
  6. Step 6: Final answer
    x = 5,797.11

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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.