Home / 3,918.70-5,412.18-2,598.40

Finding the Fourth Proportional to 3,918.70, 5,412.18 and 2,598.40

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Solution

The fourth proportional to 3,918.70, 5,412.18 and 2,598.40 is: 3,588.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.70 : 5,412.18 = 2,598.40 : x
  2. Step 2: Convert to fraction form
    3,918.70/5,412.18 = 2,598.40/x
  3. Step 3: Cross multiply
    3,918.70x = 5,412.18 × 2,598.40
  4. Step 4: Simplify right side
    3,918.70x = 14,063,008.51
  5. Step 5: Solve for x
    x = 14,063,008.51/3,918.70
  6. Step 6: Final answer
    x = 3,588.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.