Home / 1,513.66-2,089.68-916.26

Finding the Fourth Proportional to 1,513.66, 2,089.68 and 916.26

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Solution

The fourth proportional to 1,513.66, 2,089.68 and 916.26 is: 1,264.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.66 : 2,089.68 = 916.26 : x
  2. Step 2: Convert to fraction form
    1,513.66/2,089.68 = 916.26/x
  3. Step 3: Cross multiply
    1,513.66x = 2,089.68 × 916.26
  4. Step 4: Simplify right side
    1,513.66x = 1,914,690.20
  5. Step 5: Solve for x
    x = 1,914,690.20/1,513.66
  6. Step 6: Final answer
    x = 1,264.94

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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.