Home / 1,874.04-2,587.20-1,128.16

Finding the Fourth Proportional to 1,874.04, 2,587.20 and 1,128.16

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Solution

The fourth proportional to 1,874.04, 2,587.20 and 1,128.16 is: 1,557.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.04 : 2,587.20 = 1,128.16 : x
  2. Step 2: Convert to fraction form
    1,874.04/2,587.20 = 1,128.16/x
  3. Step 3: Cross multiply
    1,874.04x = 2,587.20 × 1,128.16
  4. Step 4: Simplify right side
    1,874.04x = 2,918,775.55
  5. Step 5: Solve for x
    x = 2,918,775.55/1,874.04
  6. Step 6: Final answer
    x = 1,557.48

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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.