Home / 7,880.79-10,875.35-4,295.78

Finding the Fourth Proportional to 7,880.79, 10,875.35 and 4,295.78

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Solution

The fourth proportional to 7,880.79, 10,875.35 and 4,295.78 is: 5,928.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.79 : 10,875.35 = 4,295.78 : x
  2. Step 2: Convert to fraction form
    7,880.79/10,875.35 = 4,295.78/x
  3. Step 3: Cross multiply
    7,880.79x = 10,875.35 × 4,295.78
  4. Step 4: Simplify right side
    7,880.79x = 46,718,116.73
  5. Step 5: Solve for x
    x = 46,718,116.73/7,880.79
  6. Step 6: Final answer
    x = 5,928.10

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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.