Home / 2,485.63-3,430.31-1,437.69

Finding the Fourth Proportional to 2,485.63, 3,430.31 and 1,437.69

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Solution

The fourth proportional to 2,485.63, 3,430.31 and 1,437.69 is: 1,984.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.63 : 3,430.31 = 1,437.69 : x
  2. Step 2: Convert to fraction form
    2,485.63/3,430.31 = 1,437.69/x
  3. Step 3: Cross multiply
    2,485.63x = 3,430.31 × 1,437.69
  4. Step 4: Simplify right side
    2,485.63x = 4,931,715.20
  5. Step 5: Solve for x
    x = 4,931,715.20/2,485.63
  6. Step 6: Final answer
    x = 1,984.09

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Half scale
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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.