Home / 7,345.65-10,137.08-3,988.53

Finding the Fourth Proportional to 7,345.65, 10,137.08 and 3,988.53

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Solution

The fourth proportional to 7,345.65, 10,137.08 and 3,988.53 is: 5,504.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.65 : 10,137.08 = 3,988.53 : x
  2. Step 2: Convert to fraction form
    7,345.65/10,137.08 = 3,988.53/x
  3. Step 3: Cross multiply
    7,345.65x = 10,137.08 × 3,988.53
  4. Step 4: Simplify right side
    7,345.65x = 40,432,027.75
  5. Step 5: Solve for x
    x = 40,432,027.75/7,345.65
  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.