Home / 5,124.81-7,688.25-1,615.69

Finding the Fourth Proportional to 5,124.81, 7,688.25 and 1,615.69

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Solution

The fourth proportional to 5,124.81, 7,688.25 and 1,615.69 is: 2,423.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,124.81 : 7,688.25 = 1,615.69 : x
  2. Step 2: Convert to fraction form
    5,124.81/7,688.25 = 1,615.69/x
  3. Step 3: Cross multiply
    5,124.81x = 7,688.25 × 1,615.69
  4. Step 4: Simplify right side
    5,124.81x = 12,421,828.64
  5. Step 5: Solve for x
    x = 12,421,828.64/5,124.81
  6. Step 6: Final answer
    x = 2,423.86

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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.