Home / 8,639.48-11,922-4,862.81

Finding the Fourth Proportional to 8,639.48, 11,922 and 4,862.81

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Solution

The fourth proportional to 8,639.48, 11,922 and 4,862.81 is: 6,710.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.48 : 11,922 = 4,862.81 : x
  2. Step 2: Convert to fraction form
    8,639.48/11,922 = 4,862.81/x
  3. Step 3: Cross multiply
    8,639.48x = 11,922 × 4,862.81
  4. Step 4: Simplify right side
    8,639.48x = 57,974,361.21
  5. Step 5: Solve for x
    x = 57,974,361.21/8,639.48
  6. Step 6: Final answer
    x = 6,710.40

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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.