Home / 1,513.15-2,088.08-883.72

Finding the Fourth Proportional to 1,513.15, 2,088.08 and 883.72

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Solution

The fourth proportional to 1,513.15, 2,088.08 and 883.72 is: 1,219.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.15 : 2,088.08 = 883.72 : x
  2. Step 2: Convert to fraction form
    1,513.15/2,088.08 = 883.72/x
  3. Step 3: Cross multiply
    1,513.15x = 2,088.08 × 883.72
  4. Step 4: Simplify right side
    1,513.15x = 1,845,278.06
  5. Step 5: Solve for x
    x = 1,845,278.06/1,513.15
  6. Step 6: Final answer
    x = 1,219.49

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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.