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Finding the Fourth Proportional to 1,899.01, 2,851.14 and 1,312.64

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Solution

The fourth proportional to 1,899.01, 2,851.14 and 1,312.64 is: 1,970.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.01 : 2,851.14 = 1,312.64 : x
  2. Step 2: Convert to fraction form
    1,899.01/2,851.14 = 1,312.64/x
  3. Step 3: Cross multiply
    1,899.01x = 2,851.14 × 1,312.64
  4. Step 4: Simplify right side
    1,899.01x = 3,742,520.41
  5. Step 5: Solve for x
    x = 3,742,520.41/1,899.01
  6. Step 6: Final answer
    x = 1,970.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.