Home / 1,945.40-2,918.08-1,656.20

Finding the Fourth Proportional to 1,945.40, 2,918.08 and 1,656.20

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Solution

The fourth proportional to 1,945.40, 2,918.08 and 1,656.20 is: 2,484.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.40 : 2,918.08 = 1,656.20 : x
  2. Step 2: Convert to fraction form
    1,945.40/2,918.08 = 1,656.20/x
  3. Step 3: Cross multiply
    1,945.40x = 2,918.08 × 1,656.20
  4. Step 4: Simplify right side
    1,945.40x = 4,832,924.10
  5. Step 5: Solve for x
    x = 4,832,924.10/1,945.40
  6. Step 6: Final answer
    x = 2,484.28

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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.