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Finding the Fourth Proportional to 8,477.19, 12,715.20 and 3,547.26

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Solution

The fourth proportional to 8,477.19, 12,715.20 and 3,547.26 is: 5,320.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,477.19 : 12,715.20 = 3,547.26 : x
  2. Step 2: Convert to fraction form
    8,477.19/12,715.20 = 3,547.26/x
  3. Step 3: Cross multiply
    8,477.19x = 12,715.20 × 3,547.26
  4. Step 4: Simplify right side
    8,477.19x = 45,104,120.35
  5. Step 5: Solve for x
    x = 45,104,120.35/8,477.19
  6. Step 6: Final answer
    x = 5,320.65

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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.