Home / 1,555.51-2,146.61-847.36

Finding the Fourth Proportional to 1,555.51, 2,146.61 and 847.36

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Solution

The fourth proportional to 1,555.51, 2,146.61 and 847.36 is: 1,169.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.51 : 2,146.61 = 847.36 : x
  2. Step 2: Convert to fraction form
    1,555.51/2,146.61 = 847.36/x
  3. Step 3: Cross multiply
    1,555.51x = 2,146.61 × 847.36
  4. Step 4: Simplify right side
    1,555.51x = 1,818,953.57
  5. Step 5: Solve for x
    x = 1,818,953.57/1,555.51
  6. Step 6: Final answer
    x = 1,169.36

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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.