Home / 9,880.26-13,639.70-7,637.05

Finding the Fourth Proportional to 9,880.26, 13,639.70 and 7,637.05

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Solution

The fourth proportional to 9,880.26, 13,639.70 and 7,637.05 is: 10,542.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,880.26 : 13,639.70 = 7,637.05 : x
  2. Step 2: Convert to fraction form
    9,880.26/13,639.70 = 7,637.05/x
  3. Step 3: Cross multiply
    9,880.26x = 13,639.70 × 7,637.05
  4. Step 4: Simplify right side
    9,880.26x = 104,167,070.89
  5. Step 5: Solve for x
    x = 104,167,070.89/9,880.26
  6. Step 6: Final answer
    x = 10,542.95

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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.