Home / 1,886.99-2,603.64-1,140.80

Finding the Fourth Proportional to 1,886.99, 2,603.64 and 1,140.80

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Solution

The fourth proportional to 1,886.99, 2,603.64 and 1,140.80 is: 1,574.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886.99 : 2,603.64 = 1,140.80 : x
  2. Step 2: Convert to fraction form
    1,886.99/2,603.64 = 1,140.80/x
  3. Step 3: Cross multiply
    1,886.99x = 2,603.64 × 1,140.80
  4. Step 4: Simplify right side
    1,886.99x = 2,970,232.51
  5. Step 5: Solve for x
    x = 2,970,232.51/1,886.99
  6. Step 6: Final answer
    x = 1,574.06

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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.