Home / 7,880.66-11,823.69-2,690.18

Finding the Fourth Proportional to 7,880.66, 11,823.69 and 2,690.18

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Solution

The fourth proportional to 7,880.66, 11,823.69 and 2,690.18 is: 4,036.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.66 : 11,823.69 = 2,690.18 : x
  2. Step 2: Convert to fraction form
    7,880.66/11,823.69 = 2,690.18/x
  3. Step 3: Cross multiply
    7,880.66x = 11,823.69 × 2,690.18
  4. Step 4: Simplify right side
    7,880.66x = 31,807,854.36
  5. Step 5: Solve for x
    x = 31,807,854.36/7,880.66
  6. Step 6: Final answer
    x = 4,036.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.