Home / 4,607.60-6,912.46-1,320.72

Finding the Fourth Proportional to 4,607.60, 6,912.46 and 1,320.72

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Solution

The fourth proportional to 4,607.60, 6,912.46 and 1,320.72 is: 1,981.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,607.60 : 6,912.46 = 1,320.72 : x
  2. Step 2: Convert to fraction form
    4,607.60/6,912.46 = 1,320.72/x
  3. Step 3: Cross multiply
    4,607.60x = 6,912.46 × 1,320.72
  4. Step 4: Simplify right side
    4,607.60x = 9,129,424.17
  5. Step 5: Solve for x
    x = 9,129,424.17/4,607.60
  6. Step 6: Final answer
    x = 1,981.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.