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Finding the Fourth Proportional to 1,881.86, 2,822.10 and 648.93

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Solution

The fourth proportional to 1,881.86, 2,822.10 and 648.93 is: 973.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,881.86 : 2,822.10 = 648.93 : x
  2. Step 2: Convert to fraction form
    1,881.86/2,822.10 = 648.93/x
  3. Step 3: Cross multiply
    1,881.86x = 2,822.10 × 648.93
  4. Step 4: Simplify right side
    1,881.86x = 1,831,345.35
  5. Step 5: Solve for x
    x = 1,831,345.35/1,881.86
  6. Step 6: Final answer
    x = 973.16

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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.