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Finding the Fourth Proportional to 8,895.20, 13,328.40 and 5,602.40

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Solution

The fourth proportional to 8,895.20, 13,328.40 and 5,602.40 is: 8,394.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,895.20 : 13,328.40 = 5,602.40 : x
  2. Step 2: Convert to fraction form
    8,895.20/13,328.40 = 5,602.40/x
  3. Step 3: Cross multiply
    8,895.20x = 13,328.40 × 5,602.40
  4. Step 4: Simplify right side
    8,895.20x = 74,671,028.16
  5. Step 5: Solve for x
    x = 74,671,028.16/8,895.20
  6. Step 6: Final answer
    x = 8,394.53

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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.