Home / 7,801.10-11,688.69-5,487.74

Finding the Fourth Proportional to 7,801.10, 11,688.69 and 5,487.74

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Solution

The fourth proportional to 7,801.10, 11,688.69 and 5,487.74 is: 8,222.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,801.10 : 11,688.69 = 5,487.74 : x
  2. Step 2: Convert to fraction form
    7,801.10/11,688.69 = 5,487.74/x
  3. Step 3: Cross multiply
    7,801.10x = 11,688.69 × 5,487.74
  4. Step 4: Simplify right side
    7,801.10x = 64,144,491.66
  5. Step 5: Solve for x
    x = 64,144,491.66/7,801.10
  6. Step 6: Final answer
    x = 8,222.49

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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.