Home / 8,985.18-12,406.20-5,453.16

Finding the Fourth Proportional to 8,985.18, 12,406.20 and 5,453.16

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Solution

The fourth proportional to 8,985.18, 12,406.20 and 5,453.16 is: 7,529.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.18 : 12,406.20 = 5,453.16 : x
  2. Step 2: Convert to fraction form
    8,985.18/12,406.20 = 5,453.16/x
  3. Step 3: Cross multiply
    8,985.18x = 12,406.20 × 5,453.16
  4. Step 4: Simplify right side
    8,985.18x = 67,652,993.59
  5. Step 5: Solve for x
    x = 67,652,993.59/8,985.18
  6. Step 6: Final answer
    x = 7,529.40

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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.