Home / 5,426.69-8,139.71-1,916.87

Finding the Fourth Proportional to 5,426.69, 8,139.71 and 1,916.87

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Solution

The fourth proportional to 5,426.69, 8,139.71 and 1,916.87 is: 2,875.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.69 : 8,139.71 = 1,916.87 : x
  2. Step 2: Convert to fraction form
    5,426.69/8,139.71 = 1,916.87/x
  3. Step 3: Cross multiply
    5,426.69x = 8,139.71 × 1,916.87
  4. Step 4: Simplify right side
    5,426.69x = 15,602,730.00
  5. Step 5: Solve for x
    x = 15,602,730.00/5,426.69
  6. Step 6: Final answer
    x = 2,875.19

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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.