Home / 8,688.34-11,988.39-5,152.42

Finding the Fourth Proportional to 8,688.34, 11,988.39 and 5,152.42

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Solution

The fourth proportional to 8,688.34, 11,988.39 and 5,152.42 is: 7,109.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.34 : 11,988.39 = 5,152.42 : x
  2. Step 2: Convert to fraction form
    8,688.34/11,988.39 = 5,152.42/x
  3. Step 3: Cross multiply
    8,688.34x = 11,988.39 × 5,152.42
  4. Step 4: Simplify right side
    8,688.34x = 61,769,220.40
  5. Step 5: Solve for x
    x = 61,769,220.40/8,688.34
  6. Step 6: Final answer
    x = 7,109.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.