Home / 1,555.24-2,146.23-856.62

Finding the Fourth Proportional to 1,555.24, 2,146.23 and 856.62

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Solution

The fourth proportional to 1,555.24, 2,146.23 and 856.62 is: 1,182.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.24 : 2,146.23 = 856.62 : x
  2. Step 2: Convert to fraction form
    1,555.24/2,146.23 = 856.62/x
  3. Step 3: Cross multiply
    1,555.24x = 2,146.23 × 856.62
  4. Step 4: Simplify right side
    1,555.24x = 1,838,501.12
  5. Step 5: Solve for x
    x = 1,838,501.12/1,555.24
  6. Step 6: Final answer
    x = 1,182.13

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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.