Home / 5,615.72-8,424.34-1,916.95

Finding the Fourth Proportional to 5,615.72, 8,424.34 and 1,916.95

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Solution

The fourth proportional to 5,615.72, 8,424.34 and 1,916.95 is: 2,875.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.72 : 8,424.34 = 1,916.95 : x
  2. Step 2: Convert to fraction form
    5,615.72/8,424.34 = 1,916.95/x
  3. Step 3: Cross multiply
    5,615.72x = 8,424.34 × 1,916.95
  4. Step 4: Simplify right side
    5,615.72x = 16,149,012.71
  5. Step 5: Solve for x
    x = 16,149,012.71/5,615.72
  6. Step 6: Final answer
    x = 2,875.68

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1.5x scale

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.