Home / 1,555.32-2,144.90-1,030.76

Finding the Fourth Proportional to 1,555.32, 2,144.90 and 1,030.76

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Solution

The fourth proportional to 1,555.32, 2,144.90 and 1,030.76 is: 1,421.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.32 : 2,144.90 = 1,030.76 : x
  2. Step 2: Convert to fraction form
    1,555.32/2,144.90 = 1,030.76/x
  3. Step 3: Cross multiply
    1,555.32x = 2,144.90 × 1,030.76
  4. Step 4: Simplify right side
    1,555.32x = 2,210,877.12
  5. Step 5: Solve for x
    x = 2,210,877.12/1,555.32
  6. Step 6: Final answer
    x = 1,421.49

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Double scale
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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.