Home / 10,312.79-15,467.81-2,917.89

Finding the Fourth Proportional to 10,312.79, 15,467.81 and 2,917.89

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Solution

The fourth proportional to 10,312.79, 15,467.81 and 2,917.89 is: 4,376.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,312.79 : 15,467.81 = 2,917.89 : x
  2. Step 2: Convert to fraction form
    10,312.79/15,467.81 = 2,917.89/x
  3. Step 3: Cross multiply
    10,312.79x = 15,467.81 × 2,917.89
  4. Step 4: Simplify right side
    10,312.79x = 45,133,353.53
  5. Step 5: Solve for x
    x = 45,133,353.53/10,312.79
  6. Step 6: Final answer
    x = 4,376.45

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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.