Home / 1,058.04-1,460.34-638.76

Finding the Fourth Proportional to 1,058.04, 1,460.34 and 638.76

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Solution

The fourth proportional to 1,058.04, 1,460.34 and 638.76 is: 881.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058.04 : 1,460.34 = 638.76 : x
  2. Step 2: Convert to fraction form
    1,058.04/1,460.34 = 638.76/x
  3. Step 3: Cross multiply
    1,058.04x = 1,460.34 × 638.76
  4. Step 4: Simplify right side
    1,058.04x = 932,806.78
  5. Step 5: Solve for x
    x = 932,806.78/1,058.04
  6. Step 6: Final answer
    x = 881.64

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,059.04, 1,461.72 and 639.76
Similar ratio
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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.