Home / 1,887.32-2,602.91-1,215.23

Finding the Fourth Proportional to 1,887.32, 2,602.91 and 1,215.23

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Solution

The fourth proportional to 1,887.32, 2,602.91 and 1,215.23 is: 1,675.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.32 : 2,602.91 = 1,215.23 : x
  2. Step 2: Convert to fraction form
    1,887.32/2,602.91 = 1,215.23/x
  3. Step 3: Cross multiply
    1,887.32x = 2,602.91 × 1,215.23
  4. Step 4: Simplify right side
    1,887.32x = 3,163,124.34
  5. Step 5: Solve for x
    x = 3,163,124.34/1,887.32
  6. Step 6: Final answer
    x = 1,675.99

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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.