Home / 7,130.37-10,689.78-2,973.49

Finding the Fourth Proportional to 7,130.37, 10,689.78 and 2,973.49

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Solution

The fourth proportional to 7,130.37, 10,689.78 and 2,973.49 is: 4,457.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.37 : 10,689.78 = 2,973.49 : x
  2. Step 2: Convert to fraction form
    7,130.37/10,689.78 = 2,973.49/x
  3. Step 3: Cross multiply
    7,130.37x = 10,689.78 × 2,973.49
  4. Step 4: Simplify right side
    7,130.37x = 31,785,953.93
  5. Step 5: Solve for x
    x = 31,785,953.93/7,130.37
  6. Step 6: Final answer
    x = 4,457.83

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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.