Home / 6,880.63-10,320.81-1,686.51

Finding the Fourth Proportional to 6,880.63, 10,320.81 and 1,686.51

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Solution

The fourth proportional to 6,880.63, 10,320.81 and 1,686.51 is: 2,529.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,880.63 : 10,320.81 = 1,686.51 : x
  2. Step 2: Convert to fraction form
    6,880.63/10,320.81 = 1,686.51/x
  3. Step 3: Cross multiply
    6,880.63x = 10,320.81 × 1,686.51
  4. Step 4: Simplify right side
    6,880.63x = 17,406,149.27
  5. Step 5: Solve for x
    x = 17,406,149.27/6,880.63
  6. Step 6: Final answer
    x = 2,529.73

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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.