Home / 1,528.95-2,110.33-866.20

Finding the Fourth Proportional to 1,528.95, 2,110.33 and 866.20

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Solution

The fourth proportional to 1,528.95, 2,110.33 and 866.20 is: 1,195.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.95 : 2,110.33 = 866.20 : x
  2. Step 2: Convert to fraction form
    1,528.95/2,110.33 = 866.20/x
  3. Step 3: Cross multiply
    1,528.95x = 2,110.33 × 866.20
  4. Step 4: Simplify right side
    1,528.95x = 1,827,963.65
  5. Step 5: Solve for x
    x = 1,827,963.65/1,528.95
  6. Step 6: Final answer
    x = 1,195.57

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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.