Home / 1,864.20-2,784.38-1,688.24

Finding the Fourth Proportional to 1,864.20, 2,784.38 and 1,688.24

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Solution

The fourth proportional to 1,864.20, 2,784.38 and 1,688.24 is: 2,521.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.20 : 2,784.38 = 1,688.24 : x
  2. Step 2: Convert to fraction form
    1,864.20/2,784.38 = 1,688.24/x
  3. Step 3: Cross multiply
    1,864.20x = 2,784.38 × 1,688.24
  4. Step 4: Simplify right side
    1,864.20x = 4,700,701.69
  5. Step 5: Solve for x
    x = 4,700,701.69/1,864.20
  6. Step 6: Final answer
    x = 2,521.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.