Home / 7,140.10-9,852.18-3,995.68

Finding the Fourth Proportional to 7,140.10, 9,852.18 and 3,995.68

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Solution

The fourth proportional to 7,140.10, 9,852.18 and 3,995.68 is: 5,513.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.10 : 9,852.18 = 3,995.68 : x
  2. Step 2: Convert to fraction form
    7,140.10/9,852.18 = 3,995.68/x
  3. Step 3: Cross multiply
    7,140.10x = 9,852.18 × 3,995.68
  4. Step 4: Simplify right side
    7,140.10x = 39,366,158.58
  5. Step 5: Solve for x
    x = 39,366,158.58/7,140.10
  6. Step 6: Final answer
    x = 5,513.39

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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.