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Finding the Fourth Proportional to 1,947.36, 2,918.61 and 973.74

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Solution

The fourth proportional to 1,947.36, 2,918.61 and 973.74 is: 1,459.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.36 : 2,918.61 = 973.74 : x
  2. Step 2: Convert to fraction form
    1,947.36/2,918.61 = 973.74/x
  3. Step 3: Cross multiply
    1,947.36x = 2,918.61 × 973.74
  4. Step 4: Simplify right side
    1,947.36x = 2,841,967.30
  5. Step 5: Solve for x
    x = 2,841,967.30/1,947.36
  6. Step 6: Final answer
    x = 1,459.39

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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.