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Finding the Fourth Proportional to 2,070.81, 3,104.47 and 899.93

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Solution

The fourth proportional to 2,070.81, 3,104.47 and 899.93 is: 1,349.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.81 : 3,104.47 = 899.93 : x
  2. Step 2: Convert to fraction form
    2,070.81/3,104.47 = 899.93/x
  3. Step 3: Cross multiply
    2,070.81x = 3,104.47 × 899.93
  4. Step 4: Simplify right side
    2,070.81x = 2,793,801.19
  5. Step 5: Solve for x
    x = 2,793,801.19/2,070.81
  6. Step 6: Final answer
    x = 1,349.13

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1.5x scale

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.