Home / 7,678.80-11,510.71-4,165.63

Finding the Fourth Proportional to 7,678.80, 11,510.71 and 4,165.63

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Solution

The fourth proportional to 7,678.80, 11,510.71 and 4,165.63 is: 6,244.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.80 : 11,510.71 = 4,165.63 : x
  2. Step 2: Convert to fraction form
    7,678.80/11,510.71 = 4,165.63/x
  3. Step 3: Cross multiply
    7,678.80x = 11,510.71 × 4,165.63
  4. Step 4: Simplify right side
    7,678.80x = 47,949,319.71
  5. Step 5: Solve for x
    x = 47,949,319.71/7,678.80
  6. Step 6: Final answer
    x = 6,244.38

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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.