Home / 8,647.14-11,931.39-5,290.68

Finding the Fourth Proportional to 8,647.14, 11,931.39 and 5,290.68

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Solution

The fourth proportional to 8,647.14, 11,931.39 and 5,290.68 is: 7,300.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.14 : 11,931.39 = 5,290.68 : x
  2. Step 2: Convert to fraction form
    8,647.14/11,931.39 = 5,290.68/x
  3. Step 3: Cross multiply
    8,647.14x = 11,931.39 × 5,290.68
  4. Step 4: Simplify right side
    8,647.14x = 63,125,166.45
  5. Step 5: Solve for x
    x = 63,125,166.45/8,647.14
  6. Step 6: Final answer
    x = 7,300.12

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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.