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Finding the Fourth Proportional to 8,854.81, 12,219.28 and 5,075.28

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Solution

The fourth proportional to 8,854.81, 12,219.28 and 5,075.28 is: 7,003.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,854.81 : 12,219.28 = 5,075.28 : x
  2. Step 2: Convert to fraction form
    8,854.81/12,219.28 = 5,075.28/x
  3. Step 3: Cross multiply
    8,854.81x = 12,219.28 × 5,075.28
  4. Step 4: Simplify right side
    8,854.81x = 62,016,254.71
  5. Step 5: Solve for x
    x = 62,016,254.71/8,854.81
  6. Step 6: Final answer
    x = 7,003.68

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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.