Home / 1,899.63-2,621.48-1,071.63

Finding the Fourth Proportional to 1,899.63, 2,621.48 and 1,071.63

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Solution

The fourth proportional to 1,899.63, 2,621.48 and 1,071.63 is: 1,478.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.63 : 2,621.48 = 1,071.63 : x
  2. Step 2: Convert to fraction form
    1,899.63/2,621.48 = 1,071.63/x
  3. Step 3: Cross multiply
    1,899.63x = 2,621.48 × 1,071.63
  4. Step 4: Simplify right side
    1,899.63x = 2,809,256.61
  5. Step 5: Solve for x
    x = 2,809,256.61/1,899.63
  6. Step 6: Final answer
    x = 1,478.84

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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.