Home / 7,557.69-10,430.20-4,200.78

Finding the Fourth Proportional to 7,557.69, 10,430.20 and 4,200.78

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Solution

The fourth proportional to 7,557.69, 10,430.20 and 4,200.78 is: 5,797.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,557.69 : 10,430.20 = 4,200.78 : x
  2. Step 2: Convert to fraction form
    7,557.69/10,430.20 = 4,200.78/x
  3. Step 3: Cross multiply
    7,557.69x = 10,430.20 × 4,200.78
  4. Step 4: Simplify right side
    7,557.69x = 43,814,975.56
  5. Step 5: Solve for x
    x = 43,814,975.56/7,557.69
  6. Step 6: Final answer
    x = 5,797.40

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Half scale
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Double scale
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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.