Home / 3,130.60-4,695.90-2,875.45

Finding the Fourth Proportional to 3,130.60, 4,695.90 and 2,875.45

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Solution

The fourth proportional to 3,130.60, 4,695.90 and 2,875.45 is: 4,313.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.60 : 4,695.90 = 2,875.45 : x
  2. Step 2: Convert to fraction form
    3,130.60/4,695.90 = 2,875.45/x
  3. Step 3: Cross multiply
    3,130.60x = 4,695.90 × 2,875.45
  4. Step 4: Simplify right side
    3,130.60x = 13,502,825.66
  5. Step 5: Solve for x
    x = 13,502,825.66/3,130.60
  6. Step 6: Final answer
    x = 4,313.18

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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.