Home / 1,873.53-2,586.39-1,128.06

Finding the Fourth Proportional to 1,873.53, 2,586.39 and 1,128.06

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Solution

The fourth proportional to 1,873.53, 2,586.39 and 1,128.06 is: 1,557.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,873.53 : 2,586.39 = 1,128.06 : x
  2. Step 2: Convert to fraction form
    1,873.53/2,586.39 = 1,128.06/x
  3. Step 3: Cross multiply
    1,873.53x = 2,586.39 × 1,128.06
  4. Step 4: Simplify right side
    1,873.53x = 2,917,603.10
  5. Step 5: Solve for x
    x = 2,917,603.10/1,873.53
  6. Step 6: Final answer
    x = 1,557.28

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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.