Home / 2,953.80-4,430.70-1,313.55

Finding the Fourth Proportional to 2,953.80, 4,430.70 and 1,313.55

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Solution

The fourth proportional to 2,953.80, 4,430.70 and 1,313.55 is: 1,970.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,953.80 : 4,430.70 = 1,313.55 : x
  2. Step 2: Convert to fraction form
    2,953.80/4,430.70 = 1,313.55/x
  3. Step 3: Cross multiply
    2,953.80x = 4,430.70 × 1,313.55
  4. Step 4: Simplify right side
    2,953.80x = 5,819,945.99
  5. Step 5: Solve for x
    x = 5,819,945.99/2,953.80
  6. Step 6: Final answer
    x = 1,970.33

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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.