Home / 2,913.64-4,020.68-1,587.34

Finding the Fourth Proportional to 2,913.64, 4,020.68 and 1,587.34

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Solution

The fourth proportional to 2,913.64, 4,020.68 and 1,587.34 is: 2,190.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.64 : 4,020.68 = 1,587.34 : x
  2. Step 2: Convert to fraction form
    2,913.64/4,020.68 = 1,587.34/x
  3. Step 3: Cross multiply
    2,913.64x = 4,020.68 × 1,587.34
  4. Step 4: Simplify right side
    2,913.64x = 6,382,186.19
  5. Step 5: Solve for x
    x = 6,382,186.19/2,913.64
  6. Step 6: Final answer
    x = 2,190.45

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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.