Home / 7,345.70-10,137.16-3,988.52

Finding the Fourth Proportional to 7,345.70, 10,137.16 and 3,988.52

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Solution

The fourth proportional to 7,345.70, 10,137.16 and 3,988.52 is: 5,504.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.70 : 10,137.16 = 3,988.52 : x
  2. Step 2: Convert to fraction form
    7,345.70/10,137.16 = 3,988.52/x
  3. Step 3: Cross multiply
    7,345.70x = 10,137.16 × 3,988.52
  4. Step 4: Simplify right side
    7,345.70x = 40,432,265.40
  5. Step 5: Solve for x
    x = 40,432,265.40/7,345.70
  6. Step 6: Final answer
    x = 5,504.21

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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.