Home / 7,122.47-10,671.98-2,439.89

Finding the Fourth Proportional to 7,122.47, 10,671.98 and 2,439.89

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Solution

The fourth proportional to 7,122.47, 10,671.98 and 2,439.89 is: 3,655.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.47 : 10,671.98 = 2,439.89 : x
  2. Step 2: Convert to fraction form
    7,122.47/10,671.98 = 2,439.89/x
  3. Step 3: Cross multiply
    7,122.47x = 10,671.98 × 2,439.89
  4. Step 4: Simplify right side
    7,122.47x = 26,038,457.28
  5. Step 5: Solve for x
    x = 26,038,457.28/7,122.47
  6. Step 6: Final answer
    x = 3,655.82

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1.5x scale

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.