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Finding the Fourth Proportional to 1,547.18, 2,135.26 and 884.19

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Solution

The fourth proportional to 1,547.18, 2,135.26 and 884.19 is: 1,220.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.18 : 2,135.26 = 884.19 : x
  2. Step 2: Convert to fraction form
    1,547.18/2,135.26 = 884.19/x
  3. Step 3: Cross multiply
    1,547.18x = 2,135.26 × 884.19
  4. Step 4: Simplify right side
    1,547.18x = 1,887,975.54
  5. Step 5: Solve for x
    x = 1,887,975.54/1,547.18
  6. Step 6: Final answer
    x = 1,220.27

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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.