Home / 7,140.23-9,857.09-4,489.10

Finding the Fourth Proportional to 7,140.23, 9,857.09 and 4,489.10

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Solution

The fourth proportional to 7,140.23, 9,857.09 and 4,489.10 is: 6,197.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.23 : 9,857.09 = 4,489.10 : x
  2. Step 2: Convert to fraction form
    7,140.23/9,857.09 = 4,489.10/x
  3. Step 3: Cross multiply
    7,140.23x = 9,857.09 × 4,489.10
  4. Step 4: Simplify right side
    7,140.23x = 44,249,432.46
  5. Step 5: Solve for x
    x = 44,249,432.46/7,140.23
  6. Step 6: Final answer
    x = 6,197.20

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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.