Home / 1,528.10-2,108.77-864.94

Finding the Fourth Proportional to 1,528.10, 2,108.77 and 864.94

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Solution

The fourth proportional to 1,528.10, 2,108.77 and 864.94 is: 1,193.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.10 : 2,108.77 = 864.94 : x
  2. Step 2: Convert to fraction form
    1,528.10/2,108.77 = 864.94/x
  3. Step 3: Cross multiply
    1,528.10x = 2,108.77 × 864.94
  4. Step 4: Simplify right side
    1,528.10x = 1,823,948.98
  5. Step 5: Solve for x
    x = 1,823,948.98/1,528.10
  6. Step 6: Final answer
    x = 1,193.61

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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.