Home / 1,886.91-2,603.40-1,140.33

Finding the Fourth Proportional to 1,886.91, 2,603.40 and 1,140.33

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Solution

The fourth proportional to 1,886.91, 2,603.40 and 1,140.33 is: 1,573.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886.91 : 2,603.40 = 1,140.33 : x
  2. Step 2: Convert to fraction form
    1,886.91/2,603.40 = 1,140.33/x
  3. Step 3: Cross multiply
    1,886.91x = 2,603.40 × 1,140.33
  4. Step 4: Simplify right side
    1,886.91x = 2,968,721.08
  5. Step 5: Solve for x
    x = 2,968,721.08/1,886.91
  6. Step 6: Final answer
    x = 1,573.32

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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.