Home / 8,917.53-12,303.40-5,140.18

Finding the Fourth Proportional to 8,917.53, 12,303.40 and 5,140.18

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Solution

The fourth proportional to 8,917.53, 12,303.40 and 5,140.18 is: 7,091.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.53 : 12,303.40 = 5,140.18 : x
  2. Step 2: Convert to fraction form
    8,917.53/12,303.40 = 5,140.18/x
  3. Step 3: Cross multiply
    8,917.53x = 12,303.40 × 5,140.18
  4. Step 4: Simplify right side
    8,917.53x = 63,241,603.39
  5. Step 5: Solve for x
    x = 63,241,603.39/8,917.53
  6. Step 6: Final answer
    x = 7,091.83

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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.