Home / 2,918.96-4,378.48-1,628.64

Finding the Fourth Proportional to 2,918.96, 4,378.48 and 1,628.64

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Solution

The fourth proportional to 2,918.96, 4,378.48 and 1,628.64 is: 2,442.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.96 : 4,378.48 = 1,628.64 : x
  2. Step 2: Convert to fraction form
    2,918.96/4,378.48 = 1,628.64/x
  3. Step 3: Cross multiply
    2,918.96x = 4,378.48 × 1,628.64
  4. Step 4: Simplify right side
    2,918.96x = 7,130,967.67
  5. Step 5: Solve for x
    x = 7,130,967.67/2,918.96
  6. Step 6: Final answer
    x = 2,442.98

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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.