Home / 5,368.40-7,408.37-2,978.35

Finding the Fourth Proportional to 5,368.40, 7,408.37 and 2,978.35

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Solution

The fourth proportional to 5,368.40, 7,408.37 and 2,978.35 is: 4,110.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,368.40 : 7,408.37 = 2,978.35 : x
  2. Step 2: Convert to fraction form
    5,368.40/7,408.37 = 2,978.35/x
  3. Step 3: Cross multiply
    5,368.40x = 7,408.37 × 2,978.35
  4. Step 4: Simplify right side
    5,368.40x = 22,064,718.74
  5. Step 5: Solve for x
    x = 22,064,718.74/5,368.40
  6. Step 6: Final answer
    x = 4,110.11

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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.