Home / 5,143.34-7,097.76-2,905.21

Finding the Fourth Proportional to 5,143.34, 7,097.76 and 2,905.21

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Solution

The fourth proportional to 5,143.34, 7,097.76 and 2,905.21 is: 4,009.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.34 : 7,097.76 = 2,905.21 : x
  2. Step 2: Convert to fraction form
    5,143.34/7,097.76 = 2,905.21/x
  3. Step 3: Cross multiply
    5,143.34x = 7,097.76 × 2,905.21
  4. Step 4: Simplify right side
    5,143.34x = 20,620,492.20
  5. Step 5: Solve for x
    x = 20,620,492.20/5,143.34
  6. Step 6: Final answer
    x = 4,009.16

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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.