Home / 2,457.09-3,390.51-1,409.35

Finding the Fourth Proportional to 2,457.09, 3,390.51 and 1,409.35

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Solution

The fourth proportional to 2,457.09, 3,390.51 and 1,409.35 is: 1,944.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,457.09 : 3,390.51 = 1,409.35 : x
  2. Step 2: Convert to fraction form
    2,457.09/3,390.51 = 1,409.35/x
  3. Step 3: Cross multiply
    2,457.09x = 3,390.51 × 1,409.35
  4. Step 4: Simplify right side
    2,457.09x = 4,778,415.27
  5. Step 5: Solve for x
    x = 4,778,415.27/2,457.09
  6. Step 6: Final answer
    x = 1,944.75

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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.