Home / 1,887.18-2,603.58-1,391.00

Finding the Fourth Proportional to 1,887.18, 2,603.58 and 1,391.00

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Solution

The fourth proportional to 1,887.18, 2,603.58 and 1,391.00 is: 1,919.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.18 : 2,603.58 = 1,391.00 : x
  2. Step 2: Convert to fraction form
    1,887.18/2,603.58 = 1,391.00/x
  3. Step 3: Cross multiply
    1,887.18x = 2,603.58 × 1,391.00
  4. Step 4: Simplify right side
    1,887.18x = 3,621,566.76
  5. Step 5: Solve for x
    x = 3,621,566.76/1,887.18
  6. Step 6: Final answer
    x = 1,919.04

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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.