Home / 5,120.03-7,065.50-3,130.58

Finding the Fourth Proportional to 5,120.03, 7,065.50 and 3,130.58

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Solution

The fourth proportional to 5,120.03, 7,065.50 and 3,130.58 is: 4,320.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.03 : 7,065.50 = 3,130.58 : x
  2. Step 2: Convert to fraction form
    5,120.03/7,065.50 = 3,130.58/x
  3. Step 3: Cross multiply
    5,120.03x = 7,065.50 × 3,130.58
  4. Step 4: Simplify right side
    5,120.03x = 22,119,062.01
  5. Step 5: Solve for x
    x = 22,119,062.01/5,120.03
  6. Step 6: Final answer
    x = 4,320.11

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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.