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Finding the Fourth Proportional to 7,615.95, 10,510.99 and 4,258.95

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Solution

The fourth proportional to 7,615.95, 10,510.99 and 4,258.95 is: 5,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615.95 : 10,510.99 = 4,258.95 : x
  2. Step 2: Convert to fraction form
    7,615.95/10,510.99 = 4,258.95/x
  3. Step 3: Cross multiply
    7,615.95x = 10,510.99 × 4,258.95
  4. Step 4: Simplify right side
    7,615.95x = 44,765,833.59
  5. Step 5: Solve for x
    x = 44,765,833.59/7,615.95
  6. Step 6: Final answer
    x = 5,877.90

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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.