Home / 7,140.63-10,709.85-2,459.91

Finding the Fourth Proportional to 7,140.63, 10,709.85 and 2,459.91

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Solution

The fourth proportional to 7,140.63, 10,709.85 and 2,459.91 is: 3,689.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.63 : 10,709.85 = 2,459.91 : x
  2. Step 2: Convert to fraction form
    7,140.63/10,709.85 = 2,459.91/x
  3. Step 3: Cross multiply
    7,140.63x = 10,709.85 × 2,459.91
  4. Step 4: Simplify right side
    7,140.63x = 26,345,267.11
  5. Step 5: Solve for x
    x = 26,345,267.11/7,140.63
  6. Step 6: Final answer
    x = 3,689.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.