Home / 7,021.32-9,689.64-4,038.12

Finding the Fourth Proportional to 7,021.32, 9,689.64 and 4,038.12

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Solution

The fourth proportional to 7,021.32, 9,689.64 and 4,038.12 is: 5,572.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.32 : 9,689.64 = 4,038.12 : x
  2. Step 2: Convert to fraction form
    7,021.32/9,689.64 = 4,038.12/x
  3. Step 3: Cross multiply
    7,021.32x = 9,689.64 × 4,038.12
  4. Step 4: Simplify right side
    7,021.32x = 39,127,929.08
  5. Step 5: Solve for x
    x = 39,127,929.08/7,021.32
  6. Step 6: Final answer
    x = 5,572.73

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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.