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Finding the Fourth Proportional to 7,640.03, 10,543.20 and 4,655.24

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Solution

The fourth proportional to 7,640.03, 10,543.20 and 4,655.24 is: 6,424.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,640.03 : 10,543.20 = 4,655.24 : x
  2. Step 2: Convert to fraction form
    7,640.03/10,543.20 = 4,655.24/x
  3. Step 3: Cross multiply
    7,640.03x = 10,543.20 × 4,655.24
  4. Step 4: Simplify right side
    7,640.03x = 49,081,126.37
  5. Step 5: Solve for x
    x = 49,081,126.37/7,640.03
  6. Step 6: Final answer
    x = 6,424.21

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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.