Home / 7,620.04-10,512.84-5,385.70

Finding the Fourth Proportional to 7,620.04, 10,512.84 and 5,385.70

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Solution

The fourth proportional to 7,620.04, 10,512.84 and 5,385.70 is: 7,430.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.04 : 10,512.84 = 5,385.70 : x
  2. Step 2: Convert to fraction form
    7,620.04/10,512.84 = 5,385.70/x
  3. Step 3: Cross multiply
    7,620.04x = 10,512.84 × 5,385.70
  4. Step 4: Simplify right side
    7,620.04x = 56,619,002.39
  5. Step 5: Solve for x
    x = 56,619,002.39/7,620.04
  6. Step 6: Final answer
    x = 7,430.28

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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.