Home / 7,019.20-9,686.24-3,875.32

Finding the Fourth Proportional to 7,019.20, 9,686.24 and 3,875.32

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Solution

The fourth proportional to 7,019.20, 9,686.24 and 3,875.32 is: 5,347.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,019.20 : 9,686.24 = 3,875.32 : x
  2. Step 2: Convert to fraction form
    7,019.20/9,686.24 = 3,875.32/x
  3. Step 3: Cross multiply
    7,019.20x = 9,686.24 × 3,875.32
  4. Step 4: Simplify right side
    7,019.20x = 37,537,236.00
  5. Step 5: Solve for x
    x = 37,537,236.00/7,019.20
  6. Step 6: Final answer
    x = 5,347.80

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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.