Home / 7,126.10-9,813.09-4,885.70

Finding the Fourth Proportional to 7,126.10, 9,813.09 and 4,885.70

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Solution

The fourth proportional to 7,126.10, 9,813.09 and 4,885.70 is: 6,727.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126.10 : 9,813.09 = 4,885.70 : x
  2. Step 2: Convert to fraction form
    7,126.10/9,813.09 = 4,885.70/x
  3. Step 3: Cross multiply
    7,126.10x = 9,813.09 × 4,885.70
  4. Step 4: Simplify right side
    7,126.10x = 47,943,813.81
  5. Step 5: Solve for x
    x = 47,943,813.81/7,126.10
  6. Step 6: Final answer
    x = 6,727.92

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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.