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Finding the Fourth Proportional to 5,075.76, 7,007.10 and 3,190.08

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Solution

The fourth proportional to 5,075.76, 7,007.10 and 3,190.08 is: 4,403.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,075.76 : 7,007.10 = 3,190.08 : x
  2. Step 2: Convert to fraction form
    5,075.76/7,007.10 = 3,190.08/x
  3. Step 3: Cross multiply
    5,075.76x = 7,007.10 × 3,190.08
  4. Step 4: Simplify right side
    5,075.76x = 22,353,209.57
  5. Step 5: Solve for x
    x = 22,353,209.57/5,075.76
  6. Step 6: Final answer
    x = 4,403.91

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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.