Home / 2,345.90-3,518.86-1,307.48

Finding the Fourth Proportional to 2,345.90, 3,518.86 and 1,307.48

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Solution

The fourth proportional to 2,345.90, 3,518.86 and 1,307.48 is: 1,961.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,345.90 : 3,518.86 = 1,307.48 : x
  2. Step 2: Convert to fraction form
    2,345.90/3,518.86 = 1,307.48/x
  3. Step 3: Cross multiply
    2,345.90x = 3,518.86 × 1,307.48
  4. Step 4: Simplify right side
    2,345.90x = 4,600,839.07
  5. Step 5: Solve for x
    x = 4,600,839.07/2,345.90
  6. Step 6: Final answer
    x = 1,961.23

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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.