Home / 2,656.48-3,985.36-1,117.60

Finding the Fourth Proportional to 2,656.48, 3,985.36 and 1,117.60

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Solution

The fourth proportional to 2,656.48, 3,985.36 and 1,117.60 is: 1,676.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.48 : 3,985.36 = 1,117.60 : x
  2. Step 2: Convert to fraction form
    2,656.48/3,985.36 = 1,117.60/x
  3. Step 3: Cross multiply
    2,656.48x = 3,985.36 × 1,117.60
  4. Step 4: Simplify right side
    2,656.48x = 4,454,038.34
  5. Step 5: Solve for x
    x = 4,454,038.34/2,656.48
  6. Step 6: Final answer
    x = 1,676.67

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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.